diff --git a/contrib/test_decoding/expected/ddl.out b/contrib/test_decoding/expected/ddl.out index 1e22c1eefc..d1feea4909 100644 *** a/contrib/test_decoding/expected/ddl.out --- b/contrib/test_decoding/expected/ddl.out *************** *** 543,548 **** UPDATE table_with_unique_not_null SET data = 3 WHERE data = 2; --- 543,550 ---- UPDATE table_with_unique_not_null SET id = -id; UPDATE table_with_unique_not_null SET id = -id; DELETE FROM table_with_unique_not_null WHERE data = 3; + TRUNCATE table_with_unique_not_null; + TRUNCATE table_with_unique_not_null, table_with_unique_not_null RESTART IDENTITY CASCADE; -- check toast support BEGIN; CREATE SEQUENCE toasttable_rand_seq START 79 INCREMENT 1499; -- portable "random" *************** *** 660,665 **** SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'inc --- 662,673 ---- table public.table_with_unique_not_null: DELETE: id[integer]:4 COMMIT BEGIN + table public.table_with_unique_not_null: TRUNCATE: (no-flags) + COMMIT + BEGIN + table public.table_with_unique_not_null: TRUNCATE: restart_seqs cascade + COMMIT + BEGIN table public.toasttable: INSERT: id[integer]:1 toasted_col1[text]:'123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464146514661467146814691470147114721473147414751476147714781479148014811482148314841485148614871488148914901491149214931494149514961497149814991500150115021503150415051506150715081509151015111512151315141515151615171518151915201521152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rand1[double precision]:79 toasted_col2[text]:null rand2[double precision]:1578 COMMIT BEGIN *************** *** 668,674 **** SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'inc BEGIN table public.toasttable: UPDATE: id[integer]:1 toasted_col1[text]:'123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464146514661467146814691470147114721473147414751476147714781479148014811482148314841485148614871488148914901491149214931494149514961497149814991500150115021503150415051506150715081509151015111512151315141515151615171518151915201521152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rand1[double precision]:79 toasted_col2[text]:null rand2[double precision]:1578 COMMIT ! (103 rows) INSERT INTO toasttable(toasted_col1) SELECT string_agg(g.i::text, '') FROM generate_series(1, 2000) g(i); -- update of second column, first column unchanged --- 676,682 ---- BEGIN table public.toasttable: UPDATE: id[integer]:1 toasted_col1[text]:'12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304130513061307130813091310131113121313131413151316131713181319132013211322132313241325132613271328132913301331133213331334133513361337133813391340134113421343134413451346134713481349135013511352135313541355135613571358135913601361136213631364136513661367136813691370137113721373137413751376137713781379138013811382138313841385138613871388138913901391139213931394139513961397139813991400140114021403140414051406140714081409141014111412141314141415141614171418141914201421142214231424142514261427142814291430143114321433143414351436143714381439144014411442144314441445144614471448144914501451145214531454145514561457145814591460146114621463146414651466146714681469147014711472147314741475147614771478147914801481148214831484148514861487148814891490149114921493149414951496149714981499150015011502150315041505150615071508150915101511151215131514151515161517151815191520152115221523152415251526152715281529153015311532153315341535153615371538153915401541154215431544154515461547154815491550155115521553155415551556155715581559156015611562156315641565156615671568156915701571157215731574157515761577157815791580158115821583158415851586158715881589159015911592159315941595159615971598159916001601160216031604160516061607160816091610161116121613161416151616161716181619162016211622162316241625162616271628162916301631163216331634163516361637163816391640164116421643164416451646164716481649165016511652165316541655165616571658165916601661166216631664166516661667166816691670167116721673167416751676167716781679168016811682168316841685168616871688168916901691169216931694169516961697169816991700170117021703170417051706170717081709171017111712171317141715171617171718171917201721172217231724172517261727172817291730173117321733173417351736173717381739174017411742174317441745174617471748174917501751175217531754175517561757175817591760176117621763176417651766176717681769177017711772177317741775177617771778177917801781178217831784178517861787178817891790179117921793179417951796179717981799180018011802180318041805180618071808180918101811181218131814181518161817181818191820182118221823182418251826182718281829183018311832183318341835183618371838183918401841184218431844184518461847184818491850185118521853185418551856185718581859186018611862186318641865186618671868186918701871187218731874187518761877187818791880188118821883188418851886188718881889189018911892189318941895189618971898189919001901190219031904190519061907190819091910191119121913191419151916191719181919192019211922192319241925192619271928192919301931193219331934193519361937193819391940194119421943194419451946194719481949195019511952195319541955195619571958195919601961196219631964196519661967196819691970197119721973197419751976197719781979198019811982198319841985198619871988198919901991199219931994199519961997199819992000' rand1[double precision]:79 toasted_col2[text]:null rand2[double precision]:1578 COMMIT ! (109 rows) INSERT INTO toasttable(toasted_col1) SELECT string_agg(g.i::text, '') FROM generate_series(1, 2000) g(i); -- update of second column, first column unchanged diff --git a/contrib/test_decoding/sql/ddl.sqindex 057dae056b..0fb4102db8 100644 *** a/contrib/test_decoding/sql/ddl.sql --- b/contrib/test_decoding/sql/ddl.sql *************** *** 333,338 **** UPDATE table_with_unique_not_null SET id = -id; --- 333,341 ---- UPDATE table_with_unique_not_null SET id = -id; DELETE FROM table_with_unique_not_null WHERE data = 3; + TRUNCATE table_with_unique_not_null; + TRUNCATE table_with_unique_not_null, table_with_unique_not_null RESTART IDENTITY CASCADE; + -- check toast support BEGIN; CREATE SEQUENCE toasttable_rand_seq START 79 INCREMENT 1499; -- portable "random" diff --git a/contrib/test_decoding/test_index 0f18afa852..55c4593ed5 100644 *** a/contrib/test_decoding/test_decoding.c --- b/contrib/test_decoding/test_decoding.c *************** *** 466,471 **** pg_decode_change(LogicalDecodingContext *ctx, ReorderBufferTXN *txn, --- 466,485 ---- &change->data.tp.oldtuple->tuple, true); break; + case REORDER_BUFFER_CHANGE_TRUNCATE: + appendStringInfoString(ctx->out, " TRUNCATE:"); + + if (change->data.truncate_msg.restart_seqs + || change->data.truncate_msg.cascade) + { + if (change->data.truncate_msg.restart_seqs) + appendStringInfo(ctx->out, " restart_seqs"); + if (change->data.truncate_msg.cascade) + appendStringInfo(ctx->out, " cascade"); + } + else + appendStringInfoString(ctx->out, " (no-flags)"); + break; default: Assert(false); } diff --git a/doc/src/sgml/logical-replicatioindex 75551d8ee1..6b64c8ef76 100644 *** a/doc/src/sgml/logical-replication.sgml --- b/doc/src/sgml/logical-replication.sgml *************** *** 111,116 **** --- 111,118 ---- any combination of INSERT, UPDATE, and DELETE, similar to how triggers are fired by particular event types. By default, all operation types are replicated. + TRUNCATE is treated as a form of DELETE + for the purpose of deciding whether to publish, or not. *************** *** 364,378 **** - - - TRUNCATE commands are not replicated. This can, of - course, be worked around by using DELETE instead. To - avoid accidental TRUNCATE invocations, you can revoke - the TRUNCATE privilege from tables. - - - Large objects (see ) are not replicated. --- 366,371 ---- diff --git a/doc/src/sgml/protocol.sgml b/doindex 4c5ed1e6d6..d2a0d7e52e 100644 *** a/doc/src/sgml/protocol.sgml --- b/doc/src/sgml/protocol.sgml *************** *** 6838,6843 **** TupleData --- 6838,6889 ---- + + + Truncate + + + + + + + + Byte1('T') + + + + Identifies the message as a truncate message. + + + + + + Int32 + + + + ID of the relation corresponding to the ID in the relation + message. + + + + + + Int8 + + + + Option flags for truncate. Currently can be 0 for no flags, + 1 for CASCADE, 2 for RESTART IDENTITY and 3 if both are set. + + + + + + + + + diff --git a/doc/src/sgml/ref/creindex bfe12d5f41..c5032938a7 100644 *** a/doc/src/sgml/ref/create_publication.sgml --- b/doc/src/sgml/ref/create_publication.sgml *************** *** 111,116 **** CREATE PUBLICATION name --- 111,121 ---- and so the default value for this option is 'insert, update, delete'. + + TRUNCATE is treated as a form of + DELETE for the purpose of deciding whether + to publish, or not. + *************** *** 168,175 **** CREATE PUBLICATION name ! TRUNCATE and DDL operations ! are not published. --- 173,179 ---- ! DDL operations are not published. diff --git a/src/backend/access/heap/heapam.c bindex be263850cd..f6fa99d48e 100644 *** a/src/backend/access/heap/heapam.c --- b/src/backend/access/heap/heapam.c *************** *** 9137,9142 **** heap_redo(XLogReaderState *record) --- 9137,9149 ---- case XLOG_HEAP_UPDATE: heap_xlog_update(record, false); break; + case XLOG_HEAP_TRUNCATE: + /* + * TRUNCATE is a no-op because the actions are already logged + * as SMGR WAL records. TRUNCATE WAL record only exists to allow + * it to be logically decoded precisely. + */ + break; case XLOG_HEAP_HOT_UPDATE: heap_xlog_update(record, true); break; diff --git a/src/backend/access/rmgrdesindex b00c071cb6..15550cdff0 100644 *** a/src/backend/access/rmgrdesc/heapdesc.c --- b/src/backend/access/rmgrdesc/heapdesc.c *************** *** 75,80 **** heap_desc(StringInfo buf, XLogReaderState *record) --- 75,93 ---- xlrec->new_offnum, xlrec->new_xmax); } + else if (info == XLOG_HEAP_TRUNCATE) + { + xl_heap_truncate *xlrec = (xl_heap_truncate *) rec; + + if (xlrec->flags & XLH_TRUNCATE_CASCADE) + appendStringInfo(buf, "cascade "); + if (xlrec->flags & XLH_TRUNCATE_RESTART_SEQS) + appendStringInfo(buf, "restart_seqs "); + appendStringInfo(buf, "nrelids %u nseqrelids %u", + xlrec->nrelids, + xlrec->nseqrelids); + /* Skip the list of relids and seqrelids */ + } else if (info == XLOG_HEAP_CONFIRM) { xl_heap_confirm *xlrec = (xl_heap_confirm *) rec; *************** *** 186,191 **** heap_identify(uint8 info) --- 199,207 ---- case XLOG_HEAP_HOT_UPDATE | XLOG_HEAP_INIT_PAGE: id = "HOT_UPDATE+INIT"; break; + case XLOG_HEAP_TRUNCATE: + id = "TRUNCATE"; + break; case XLOG_HEAP_CONFIRM: id = "HEAP_CONFIRM"; break; diff --git a/src/backend/commands/tablecmds.cindex bdce4164d6..61f700d8b2 100644 *** a/src/backend/commands/tablecmds.c --- b/src/backend/commands/tablecmds.c *************** *** 16,21 **** --- 16,22 ---- #include "access/genam.h" #include "access/heapam.h" + #include "access/heapam_xlog.h" #include "access/multixact.h" #include "access/reloptions.h" #include "access/relscan.h" *************** *** 1312,1322 **** ExecuteTruncate(TruncateStmt *stmt) { List *rels = NIL; List *relids = NIL; ! List *seq_relids = NIL; ! EState *estate; ! ResultRelInfo *resultRelInfos; ! ResultRelInfo *resultRelInfo; ! SubTransactionId mySubid; ListCell *cell; /* --- 1313,1319 ---- { List *rels = NIL; List *relids = NIL; ! List *relids_logged = NIL; ListCell *cell; /* *************** *** 1340,1345 **** ExecuteTruncate(TruncateStmt *stmt) --- 1337,1345 ---- truncate_check_rel(rel); rels = lappend(rels, rel); relids = lappend_oid(relids, myrelid); + /* Log this relation only if needed for logical decoding */ + if (RelationIsLogicallyLogged(rel)) + relids_logged = lappend_oid(relids_logged, myrelid); if (recurse) { *************** *** 1360,1365 **** ExecuteTruncate(TruncateStmt *stmt) --- 1360,1368 ---- truncate_check_rel(rel); rels = lappend(rels, rel); relids = lappend_oid(relids, childrelid); + /* Log this relation only if needed for logical decoding */ + if (RelationIsLogicallyLogged(rel)) + relids_logged = lappend_oid(relids_logged, childrelid); } } else if (rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE) *************** *** 1369,1375 **** ExecuteTruncate(TruncateStmt *stmt) --- 1372,1410 ---- errhint("Do not specify the ONLY keyword, or use truncate only on the partitions directly."))); } + ExecuteTruncateGuts(rels, relids, relids_logged, + stmt->behavior, stmt->restart_seqs); + + /* And close the rels */ + foreach(cell, rels) + { + Relation rel = (Relation) lfirst(cell); + + heap_close(rel, NoLock); + } + + } + + void + ExecuteTruncateGuts(List *explicit_rels, List *relids, List *relids_logged, + DropBehavior behavior, bool restart_seqs) + { + List *rels = list_copy(explicit_rels); + List *seq_relids = NIL; + EState *estate; + ResultRelInfo *resultRelInfos; + ResultRelInfo *resultRelInfo; + SubTransactionId mySubid; + ListCell *cell; + List *seq_relids_logged = NIL; + uint32 nrelids = 0; + uint32 nseqrelids = 0; + uint32 maxrelids = 2; + Oid *logrelids = NULL; + /* + * Open, exclusive-lock, and check all the explicitly-specified relations + * * In CASCADE mode, suck in all referencing relations as well. This * requires multiple iterations to find indirectly-dependent relations. At * each phase, we need to exclusive-lock new rels before looking for their *************** *** 1377,1383 **** ExecuteTruncate(TruncateStmt *stmt) * soon as we open it, to avoid a faux pas such as holding lock for a long * time on a rel we have no permissions for. */ ! if (stmt->behavior == DROP_CASCADE) { for (;;) { --- 1412,1418 ---- * soon as we open it, to avoid a faux pas such as holding lock for a long * time on a rel we have no permissions for. */ ! if (behavior == DROP_CASCADE) { for (;;) { *************** *** 1399,1404 **** ExecuteTruncate(TruncateStmt *stmt) --- 1434,1442 ---- truncate_check_rel(rel); rels = lappend(rels, rel); relids = lappend_oid(relids, relid); + /* Log this relation only if needed for logical decoding */ + if (RelationIsLogicallyLogged(rel)) + relids_logged = lappend_oid(relids_logged, relid); } } } *************** *** 1418,1424 **** ExecuteTruncate(TruncateStmt *stmt) #ifdef USE_ASSERT_CHECKING heap_truncate_check_FKs(rels, false); #else ! if (stmt->behavior == DROP_RESTRICT) heap_truncate_check_FKs(rels, false); #endif } --- 1456,1462 ---- #ifdef USE_ASSERT_CHECKING heap_truncate_check_FKs(rels, false); #else ! if (behavior == DROP_RESTRICT) heap_truncate_check_FKs(rels, false); #endif } *************** *** 1429,1435 **** ExecuteTruncate(TruncateStmt *stmt) * We want to do this early since it's pointless to do all the truncation * work only to fail on sequence permissions. */ ! if (stmt->restart_seqs) { foreach(cell, rels) { --- 1467,1473 ---- * We want to do this early since it's pointless to do all the truncation * work only to fail on sequence permissions. */ ! if (restart_seqs) { foreach(cell, rels) { *************** *** 1450,1455 **** ExecuteTruncate(TruncateStmt *stmt) --- 1488,1497 ---- RelationGetRelationName(seq_rel)); seq_relids = lappend_oid(seq_relids, seq_relid); + /* Log this relation only if needed for logical decoding */ + if (RelationIsLogicallyLogged(seq_rel)) + seq_relids_logged = lappend_oid(seq_relids_logged, + seq_relid); relation_close(seq_rel, NoLock); } *************** *** 1584,1589 **** ExecuteTruncate(TruncateStmt *stmt) --- 1626,1685 ---- ResetSequence(seq_relid); } + /* + * Write a WAL record to allow this set of actions to be logically decoded. + * We could optimize this away when !RelationIsLogicallyLogged(rel) + * but that doesn't save much space or time. + * + * Assemble an array of relids, then an array of seqrelids so we can write + * a single WAL record for the whole action. + */ + logrelids = palloc(maxrelids * sizeof(Oid)); + foreach (cell, relids_logged) + { + nrelids++; + if (nrelids > maxrelids) + { + maxrelids *= 2; + logrelids = repalloc(logrelids, maxrelids * sizeof(Oid)); + } + logrelids[nrelids - 1] = lfirst_oid(cell); + } + + foreach (cell, seq_relids_logged) + { + nseqrelids++; + if ((nrelids + nseqrelids) > maxrelids) + { + maxrelids *= 2; + logrelids = repalloc(logrelids, maxrelids * sizeof(Oid)); + } + logrelids[nrelids + nseqrelids - 1] = lfirst_oid(cell); + } + + if ((nrelids + nseqrelids) > 0) + { + xl_heap_truncate xlrec; + + xlrec.dbId = MyDatabaseId; + xlrec.nrelids = nrelids; + xlrec.nseqrelids = nseqrelids; + xlrec.flags = 0; + if (behavior == DROP_CASCADE) + xlrec.flags |= XLH_TRUNCATE_CASCADE; + if (restart_seqs) + xlrec.flags |= XLH_TRUNCATE_RESTART_SEQS; + + XLogBeginInsert(); + XLogRegisterData((char *) &xlrec, SizeOfHeapTruncate); + XLogRegisterData((char *) logrelids, + (nrelids + nseqrelids) * sizeof(Oid)); + + XLogSetRecordFlags(XLOG_INCLUDE_ORIGIN); + + (void) XLogInsert(RM_HEAP_ID, XLOG_HEAP_TRUNCATE); + } + /* * Process all AFTER STATEMENT TRUNCATE triggers. */ *************** *** 1601,1607 **** ExecuteTruncate(TruncateStmt *stmt) /* We can clean up the EState now */ FreeExecutorState(estate); ! /* And close the rels (can't do this while EState still holds refs) */ foreach(cell, rels) { Relation rel = (Relation) lfirst(cell); --- 1697,1706 ---- /* We can clean up the EState now */ FreeExecutorState(estate); ! /* And close the eventual rels opened by CASCADE ! * (can't do this while EState still holds refs) ! */ ! rels = list_difference_ptr(rels, explicit_rels); foreach(cell, rels) { Relation rel = (Relation) lfirst(cell); diff --git a/src/backend/replication/loindex 6eb0d5527e..ef5b937807 100644 *** a/src/backend/replication/logical/decode.c --- b/src/backend/replication/logical/decode.c *************** *** 65,70 **** static void DecodeLogicalMsgOp(LogicalDecodingContext *ctx, XLogRecordBuffer *bu --- 65,71 ---- static void DecodeInsert(LogicalDecodingContext *ctx, XLogRecordBuffer *buf); static void DecodeUpdate(LogicalDecodingContext *ctx, XLogRecordBuffer *buf); static void DecodeDelete(LogicalDecodingContext *ctx, XLogRecordBuffer *buf); + static void DecodeTruncate(LogicalDecodingContext *ctx, XLogRecordBuffer *buf); static void DecodeMultiInsert(LogicalDecodingContext *ctx, XLogRecordBuffer *buf); static void DecodeSpecConfirm(LogicalDecodingContext *ctx, XLogRecordBuffer *buf); *************** *** 449,454 **** DecodeHeapOp(LogicalDecodingContext *ctx, XLogRecordBuffer *buf) --- 450,460 ---- DecodeDelete(ctx, buf); break; + case XLOG_HEAP_TRUNCATE: + if (SnapBuildProcessChange(builder, xid, buf->origptr)) + DecodeTruncate(ctx, buf); + break; + case XLOG_HEAP_INPLACE: /* *************** *** 825,830 **** DecodeDelete(LogicalDecodingContext *ctx, XLogRecordBuffer *buf) --- 831,876 ---- ReorderBufferQueueChange(ctx->reorder, XLogRecGetXid(r), buf->origptr, change); } + /* + * Parse XLOG_HEAP_TRUNCATE from wal + */ + static void + DecodeTruncate(LogicalDecodingContext *ctx, XLogRecordBuffer *buf) + { + XLogReaderState *r = buf->record; + xl_heap_truncate *xlrec; + ReorderBufferChange *change; + int i; + + xlrec = (xl_heap_truncate *) XLogRecGetData(r); + + /* only interested in our database */ + if (xlrec->dbId != ctx->slot->data.database) + return; + + /* output plugin doesn't look for this origin, no need to queue */ + if (FilterByOrigin(ctx, XLogRecGetOrigin(r))) + return; + + change = ReorderBufferGetChange(ctx->reorder); + change->action = REORDER_BUFFER_CHANGE_TRUNCATE; + change->origin_id = XLogRecGetOrigin(r); + if (xlrec->flags & XLH_TRUNCATE_CASCADE) + change->data.truncate_msg.cascade = true; + if (xlrec->flags & XLH_TRUNCATE_RESTART_SEQS) + change->data.truncate_msg.restart_seqs = true; + + /* + * Queue up one change per relation, ignoring sequences for now + */ + for (i = 0; i < xlrec->nrelids; i++) + { + change->data.truncate_msg.relid = xlrec->relids[i]; + ReorderBufferQueueChange(ctx->reorder, XLogRecGetXid(r), + buf->origptr, change); + } + } + /* * Decode XLOG_HEAP2_MULTI_INSERT_insert record into multiple tuplebufs. * diff --git a/src/backend/replication/logical/prindex 948343e4ae..2fa6f8393d 100644 *** a/src/backend/replication/logical/proto.c --- b/src/backend/replication/logical/proto.c *************** *** 26,31 **** --- 26,34 ---- */ #define LOGICALREP_IS_REPLICA_IDENTITY 1 + #define TRUNCATE_CASCADE (1<<0) + #define TRUNCATE_RESTART_SEQS (1<<1) + static void logicalrep_write_attrs(StringInfo out, Relation rel); static void logicalrep_write_tuple(StringInfo out, Relation rel, HeapTuple tuple); *************** *** 292,297 **** logicalrep_read_delete(StringInfo in, LogicalRepTupleData *oldtup) --- 295,342 ---- return relid; } + /* + * Write TRUNCATE to the output stream. + */ + void + logicalrep_write_truncate(StringInfo out, Relation rel, + bool cascade, bool restart_seqs) + { + uint8 flags = 0; + + pq_sendbyte(out, 'T'); /* action TRUNCATE */ + + /* use Oid as relation identifier */ + pq_sendint32(out, RelationGetRelid(rel)); + + /* encode and send truncate flags */ + if (cascade) + flags |= TRUNCATE_CASCADE; + if (restart_seqs) + flags |= TRUNCATE_RESTART_SEQS; + pq_sendint8(out, flags); + } + + /* + * Read TRUNCATE from stream. + */ + LogicalRepRelId + logicalrep_read_truncate(StringInfo in, bool *cascade, bool *restart_seqs) + { + LogicalRepRelId relid; + uint8 flags; + + /* read the relation id */ + relid = pq_getmsgint(in, 4); + + /* read and decode truncate flags */ + flags = pq_getmsgint(in, 1); + *cascade = (flags & TRUNCATE_CASCADE) > 0; + *restart_seqs = (flags & TRUNCATE_RESTART_SEQS) > 0; + + return relid; + } + /* * Write relation description to the output stream. */ diff --git a/src/backend/replication/logical/rindex c72a611a39..f1d65c1457 100644 *** a/src/backend/replication/logical/reorderbuffer.c --- b/src/backend/replication/logical/reorderbuffer.c *************** *** 403,408 **** ReorderBufferReturnChange(ReorderBuffer *rb, ReorderBufferChange *change) --- 403,410 ---- case REORDER_BUFFER_CHANGE_INTERNAL_COMMAND_ID: case REORDER_BUFFER_CHANGE_INTERNAL_TUPLECID: break; + case REORDER_BUFFER_CHANGE_TRUNCATE: + break; } pfree(change); *************** *** 1342,1347 **** ReorderBufferCommit(ReorderBuffer *rb, TransactionId xid, --- 1344,1356 ---- switch (change->action) { + case REORDER_BUFFER_CHANGE_TRUNCATE: + reloid = change->data.truncate_msg.relid; + relation = RelationIdGetRelation(reloid); + rb->apply_change(rb, txn, relation, change); + RelationClose(relation); + break; + case REORDER_BUFFER_CHANGE_INTERNAL_SPEC_CONFIRM: /* *************** *** 2239,2244 **** ReorderBufferSerializeChange(ReorderBuffer *rb, ReorderBufferTXN *txn, --- 2248,2254 ---- } break; } + case REORDER_BUFFER_CHANGE_TRUNCATE: case REORDER_BUFFER_CHANGE_INTERNAL_SPEC_CONFIRM: case REORDER_BUFFER_CHANGE_INTERNAL_COMMAND_ID: case REORDER_BUFFER_CHANGE_INTERNAL_TUPLECID: *************** *** 2524,2529 **** ReorderBufferRestoreChange(ReorderBuffer *rb, ReorderBufferTXN *txn, --- 2534,2540 ---- break; } /* the base struct contains all the data, easy peasy */ + case REORDER_BUFFER_CHANGE_TRUNCATE: case REORDER_BUFFER_CHANGE_INTERNAL_SPEC_CONFIRM: case REORDER_BUFFER_CHANGE_INTERNAL_COMMAND_ID: case REORDER_BUFFER_CHANGE_INTERNAL_TUPLECID: diff --git a/src/backend/replication/logical/worker.c index 83c69092ae..12add0b4b9 100644 *** a/src/backend/replication/logical/worker.c --- b/src/backend/replication/logical/worker.c *************** *** 869,874 **** apply_handle_delete(StringInfo s) --- 869,925 ---- CommandCounterIncrement(); } + /* + * Handle TRUNCATE message. + * + * TODO: FDW support + */ + static void + apply_handle_truncate(StringInfo s) + { + LogicalRepRelMapEntry *rel; + LogicalRepRelId relid; + bool cascade = false; + bool restart_seqs = false; + List *rels = NIL; + List *relids = NIL; + + ensure_transaction(); + + relid = logicalrep_read_truncate(s, &cascade, &restart_seqs); + rel = logicalrep_rel_open(relid, RowExclusiveLock); + if (!should_apply_changes_for_rel(rel)) + { + /* + * The relation can't become interesting in the middle of the + * transaction so it's safe to unlock it. + */ + logicalrep_rel_close(rel, RowExclusiveLock); + return; + } + + /* Check if we can do the truncate. */ + check_relation_updatable(rel); + + rels = lappend(rels, rel->localrel); + relids = lappend_oid(relids, rel->localreloid); + + /* + * Even if we used CASCADE on the upstream master we explicitly + * default to replaying changes without further cascading. + * This might be later changeable with a user specified option. + */ + cascade = false; + + ExecuteTruncateGuts(rels, relids, NULL, + cascade ? DROP_CASCADE : DROP_RESTRICT, + restart_seqs); + + logicalrep_rel_close(rel, NoLock); + + CommandCounterIncrement(); + } + /* * Logical replication protocol message dispatcher. *************** *** 900,905 **** apply_dispatch(StringInfo s) --- 951,960 ---- case 'D': apply_handle_delete(s); break; + /* TRUNCATE */ + case 'T': + apply_handle_truncate(s); + break; /* RELATION */ case 'R': apply_handle_relation(s); diff --git a/src/backend/replication/pgoutput/pindex 40a1ef3c1d..7fbd0a3dca 100644 *** a/src/backend/replication/pgoutput/pgoutput.c --- b/src/backend/replication/pgoutput/pgoutput.c *************** *** 275,280 **** pgoutput_change(LogicalDecodingContext *ctx, ReorderBufferTXN *txn, --- 275,281 ---- if (!relentry->pubactions.pubupdate) return; break; + case REORDER_BUFFER_CHANGE_TRUNCATE: case REORDER_BUFFER_CHANGE_DELETE: if (!relentry->pubactions.pubdelete) return; *************** *** 352,357 **** pgoutput_change(LogicalDecodingContext *ctx, ReorderBufferTXN *txn, --- 353,367 ---- else elog(DEBUG1, "didn't send DELETE change because of missing oldtuple"); break; + case REORDER_BUFFER_CHANGE_TRUNCATE: + { + OutputPluginPrepareWrite(ctx, true); + logicalrep_write_truncate(ctx->out, relation, + change->data.truncate_msg.cascade, + change->data.truncate_msg.restart_seqs); + OutputPluginWrite(ctx, true); + } + break; default: Assert(false); } diff --git a/src/include/access/heapam_xlog.h b/srindex 700e25c36a..c56b200f7d 100644 *** a/src/include/access/heapam_xlog.h --- b/src/include/access/heapam_xlog.h *************** *** 32,38 **** #define XLOG_HEAP_INSERT 0x00 #define XLOG_HEAP_DELETE 0x10 #define XLOG_HEAP_UPDATE 0x20 ! /* 0x030 is free, was XLOG_HEAP_MOVE */ #define XLOG_HEAP_HOT_UPDATE 0x40 #define XLOG_HEAP_CONFIRM 0x50 #define XLOG_HEAP_LOCK 0x60 --- 32,38 ---- #define XLOG_HEAP_INSERT 0x00 #define XLOG_HEAP_DELETE 0x10 #define XLOG_HEAP_UPDATE 0x20 ! #define XLOG_HEAP_TRUNCATE 0x30 #define XLOG_HEAP_HOT_UPDATE 0x40 #define XLOG_HEAP_CONFIRM 0x50 #define XLOG_HEAP_LOCK 0x60 *************** *** 109,114 **** typedef struct xl_heap_delete --- 109,136 ---- #define SizeOfHeapDelete (offsetof(xl_heap_delete, flags) + sizeof(uint8)) + /* + * xl_heap_delete flag values, 8 bits are available. + */ + #define XLH_TRUNCATE_CASCADE (1<<0) + #define XLH_TRUNCATE_RESTART_SEQS (1<<1) + + /* + * For truncate we list all truncated relids in an array, followed by all + * sequence relids that need to be restarted, if any. + * All rels are always within the same database, so we just list dbid once. + */ + typedef struct xl_heap_truncate + { + Oid dbId; + uint32 nrelids; + uint32 nseqrelids; + uint8 flags; + Oid relids[FLEXIBLE_ARRAY_MEMBER]; + } xl_heap_truncate; + + #define SizeOfHeapTruncate (offsetof(xl_heap_truncate, relids)) + /* * We don't store the whole fixed part (HeapTupleHeaderData) of an inserted * or updated tuple in WAL; we can save a few bytes by reconstructing the diff --git a/src/include/executor/execuindex 6545a80222..8cb12a20e9 100644 *** a/src/include/executor/executor.h --- b/src/include/executor/executor.h *************** *** 558,561 **** extern void CheckCmdReplicaIdentity(Relation rel, CmdType cmd); --- 558,567 ---- extern void CheckSubscriptionRelkind(char relkind, const char *nspname, const char *relname); + /* + * prototype for tablecmds.c accessible for logical apply + */ + void ExecuteTruncateGuts(List *explicit_rels, List *relids, List *relids_logged, + DropBehavior behavior, bool restart_seqs); + #endif /* EXECUTOR_H */ diff --git a/src/include/replication/lindex 0eb21057c5..b1abb9e36f 100644 *** a/src/include/replication/logicalproto.h --- b/src/include/replication/logicalproto.h *************** *** 98,103 **** extern void logicalrep_write_delete(StringInfo out, Relation rel, --- 98,107 ---- HeapTuple oldtuple); extern LogicalRepRelId logicalrep_read_delete(StringInfo in, LogicalRepTupleData *oldtup); + extern void logicalrep_write_truncate(StringInfo out, Relation rel, + bool cascade, bool restart_seqs); + extern LogicalRepRelId logicalrep_read_truncate(StringInfo in, + bool *cascade, bool *restart_seqs); extern void logicalrep_write_rel(StringInfo out, Relation rel); extern LogicalRepRelation *logicalrep_read_rel(StringInfo in); extern void logicalrep_write_typ(StringInfo out, Oid typoid); diff --git a/src/include/replication/reorderbindex 0970abca52..e8439fac49 100644 *** a/src/include/replication/reorderbuffer.h --- b/src/include/replication/reorderbuffer.h *************** *** 59,65 **** enum ReorderBufferChangeType REORDER_BUFFER_CHANGE_INTERNAL_COMMAND_ID, REORDER_BUFFER_CHANGE_INTERNAL_TUPLECID, REORDER_BUFFER_CHANGE_INTERNAL_SPEC_INSERT, ! REORDER_BUFFER_CHANGE_INTERNAL_SPEC_CONFIRM }; /* --- 59,66 ---- REORDER_BUFFER_CHANGE_INTERNAL_COMMAND_ID, REORDER_BUFFER_CHANGE_INTERNAL_TUPLECID, REORDER_BUFFER_CHANGE_INTERNAL_SPEC_INSERT, ! REORDER_BUFFER_CHANGE_INTERNAL_SPEC_CONFIRM, ! REORDER_BUFFER_CHANGE_TRUNCATE }; /* *************** *** 128,134 **** typedef struct ReorderBufferChange CommandId cmax; CommandId combocid; } tuplecid; ! } data; /* * While in use this is how a change is linked into a transactions, --- 129,146 ---- CommandId cmax; CommandId combocid; } tuplecid; ! ! /* ! * Truncate data for REORDER_BUFFER_CHANGE_TRUNCATE representing ! * one relation to be truncated. ! */ ! struct ! { ! Oid relid; ! bool cascade; ! bool restart_seqs; ! } truncate_msg; ! } data; /* * While in use this is how a change is linked into a transactions, diff --git a/src/test/subscription/t/001_rep_cindex e0104cd8d0..96a6071b3a 100644 *** a/src/test/subscription/t/001_rep_changes.pl --- b/src/test/subscription/t/001_rep_changes.pl *************** *** 3,9 **** use strict; use warnings; use PostgresNode; use TestLib; ! use Test::More tests => 16; # Initialize publisher node my $node_publisher = get_new_node('publisher'); --- 3,9 ---- use warnings; use PostgresNode; use TestLib; ! use Test::More tests => 24; # Initialize publisher node my $node_publisher = get_new_node('publisher'); *************** *** 176,181 **** $result = $node_subscriber->safe_psql('postgres', --- 176,191 ---- is($result, qq(1152|1|1100), 'check replicated inserts after subscription publication change'); + $result = $node_subscriber->safe_psql('postgres', + "SELECT count(*), min(a), max(a) FROM tab_rep"); + is($result, qq(20|-20|-1), + 'check changes skipped after subscription publication change'); + + # truncate should not be replicated + $node_publisher->safe_psql('postgres', "TRUNCATE tab_rep"); + + $node_publisher->wait_for_catchup($appname); + $result = $node_subscriber->safe_psql('postgres', "SELECT count(*), min(a), max(a) FROM tab_rep"); is($result, qq(20|-20|-1), *************** *** 185,191 **** is($result, qq(20|-20|-1), $node_publisher->safe_psql('postgres', "ALTER PUBLICATION tap_pub_ins_only SET (publish = 'insert, delete')"); $node_publisher->safe_psql('postgres', ! "ALTER PUBLICATION tap_pub_ins_only ADD TABLE tab_full"); $node_publisher->safe_psql('postgres', "DELETE FROM tab_ins WHERE a > 0"); $node_subscriber->safe_psql('postgres', "ALTER SUBSCRIPTION tap_sub REFRESH PUBLICATION WITH (copy_data = false)" --- 195,201 ---- $node_publisher->safe_psql('postgres', "ALTER PUBLICATION tap_pub_ins_only SET (publish = 'insert, delete')"); $node_publisher->safe_psql('postgres', ! "ALTER PUBLICATION tap_pub_ins_only ADD TABLE tab_full, tab_rep"); $node_publisher->safe_psql('postgres', "DELETE FROM tab_ins WHERE a > 0"); $node_subscriber->safe_psql('postgres', "ALTER SUBSCRIPTION tap_sub REFRESH PUBLICATION WITH (copy_data = false)" *************** *** 204,209 **** $result = $node_subscriber->safe_psql('postgres', --- 214,282 ---- "SELECT count(*), min(a), max(a) FROM tab_full"); is($result, qq(21|0|100), 'check replicated insert after alter publication'); + # add a sequence and a foreign key to check cascade and restart + # identity truncate options + $node_subscriber->safe_psql('postgres', + "CREATE TABLE tab_notrep_fk (a int REFERENCES tab_rep(a))" + ); + $node_subscriber->safe_psql('postgres', "INSERT INTO tab_notrep_fk VALUES (-1)"); + $node_subscriber->safe_psql('postgres', + "CREATE SEQUENCE seq_notrep OWNED BY tab_rep.a" + ); + $node_subscriber->safe_psql('postgres', + "ALTER SEQUENCE seq_notrep START 101" + ); + + # truncate should now be replicated + $node_publisher->safe_psql('postgres', "TRUNCATE tab_rep"); + + $node_publisher->wait_for_catchup($appname); + + $result = $node_subscriber->safe_psql('postgres', + "SELECT count(*), min(a), max(a) FROM tab_rep"); + is($result, qq(0||), + 'check replicated truncate after alter publication'); + + $result = $node_subscriber->safe_psql('postgres', + "SELECT count(*), min(a), max(a) FROM tab_notrep_fk"); + is($result, qq(1|-1|-1), + 'check replicated truncate does not cascade'); + + $result = $node_subscriber->safe_psql('postgres', + "SELECT nextval('seq_notrep')"); + is($result, qq(1), + 'check replicated truncate does not restart identities'); + + # should restart identity + $node_publisher->safe_psql('postgres', "TRUNCATE tab_rep RESTART IDENTITY"); + + $node_publisher->wait_for_catchup($appname); + + $result = $node_subscriber->safe_psql('postgres', + "SELECT count(*), min(a), max(a) FROM tab_notrep_fk"); + is($result, qq(1|-1|-1), + 'check replicated truncate does not cascade'); + + $result = $node_subscriber->safe_psql('postgres', + "SELECT nextval('seq_notrep')"); + is($result, qq(101), + 'check replicated truncate restart identities'); + + # should not cascade on replica + $node_publisher->safe_psql('postgres', "TRUNCATE tab_rep CASCADE"); + + $node_publisher->wait_for_catchup($appname); + + $result = $node_subscriber->safe_psql('postgres', + "SELECT count(*), min(a), max(a) FROM tab_notrep_fk"); + is($result, qq(1|-1|-1), + 'check replicated truncate does not cascade on replica'); + + $result = $node_subscriber->safe_psql('postgres', + "SELECT nextval('seq_notrep')"); + is($result, qq(102), + 'check replicated truncate does not restart identities'); + # check restart on rename $oldpid = $node_publisher->safe_psql('postgres', "SELECT pid FROM pg_stat_replication WHERE application_name = '$appname';"