Re: Should data directories match between master and hot standby?

Hi all,

Looks like I found the reason. There is a huge query on the slave that
has been running for 5 hours. It's doing major sorting and has claimed
29 gigs in the base/pgsql_tmp/ directory, which is the excact
discrepancy between the master and the slave.

So makes sense, I'm good,

- Brian F

On 10/03/2012 02:01 PM, Brian Fehrle wrote:
> Hi all,
>
> I have a hot standby (via streaming replication) set up on a
> postgresql 9.0.4 system.
>
> (I'm looking at base to eliminate differences in xlog and pg_log, etc)
> The size of my base directory on the master is 775G, the size of the
> base directory on the hot standby is 804G.
>
> Is this normal? Collecting the info from the master and the slave
> using the following shows I'm in sync:
>
> [on the master] select pg_current_xlog_location() ->
> pg_xlogfile_name_offset -> (0000000100007AB0000000E7,7282688)
> [on the slave] select pg_last_xlog_receive_location() ->
> pg_xlogfile_name_offset -> (0000000100007AB0000000E7,7282688)
> [on the slave] select pg_last_xlog_replay_location() ->
> pg_xlogfile_name_offset -> (0000000100007AB0000000E7,7281296)
>
> So I'm in sync, not like the slave is waiting on a huge delete or
> anything.
>
> Any thoughts or ideas what this could be?
>
> Thanks in advance,
>
> - Brian F
>
>