Re: BUG #15114: logical decoding Segmentation fault

Hi,

On 2018-03-15 23:55:32 +0100, Петър Славов wrote:
> Here is the code dump with bt:

Thanks, this is interesting. Could you show the definition of the
tables involved in this?

For some reason I dont understand you appear to have managed to get a
predicated index used as the identity column.

> /build/postgresql-10-drhiey/postgresql-10-10.3/build/../src/backend/optimizer/util/clauses.c:2437
> #13 0x00005649b777181a in RelationGetIndexPredicate
> (relation=relation(at)entry=0x7f76e7841568)
> at
> /build/postgresql-10-drhiey/postgresql-10-10.3/build/../src/backend/utils/cache/relcache.c:4813
> #14 0x00005649b7443d60 in BuildIndexInfo (index=index(at)entry=0x7f76e7841568)
> at
> /build/postgresql-10-drhiey/postgresql-10-10.3/build/../src/backend/catalog/index.c:1660
> #15 0x00005649b7771b90 in RelationGetIndexAttrBitmap
> (relation=relation(at)entry=0x7f76e7836638,
> attrKind=attrKind(at)entry=INDEX_ATTR_BITMAP_IDENTITY_KEY)
> at
> /build/postgresql-10-drhiey/postgresql-10-10.3/build/../src/backend/utils/cache/relcache.c:4938
> #16 0x00005649b7614368 in logicalrep_write_attrs (rel=0x7f76e7836638,
> out=0x5649b88dee38) at
> /build/postgresql-10-drhiey/postgresql-10-10.3/build/../src/backend/replication/logical/proto.c:530
> #17 logicalrep_write_rel (out=0x5649b88dee38, rel=0x7f76e7836638) at
> /build/postgresql-10-drhiey/postgresql-10-10.3/build/../src/backend/replication/logical/proto.c:317
> #18 0x00007f76998b5e6f in pgoutput_change (ctx=<optimized out>,
> txn=<optimized out>, relation=0x7f76e7836638, change=0x5649b899b1f8) at
> /build/postgresql-10-drhiey/postgresql-10-10.3/build/../src/backend/replication/pgoutput/pgoutput.c:324

We should never end up with an identity index that has a predicate. So
something's wrong here...

Greetings,

Andres Freund