From: | Seb Mel <webmaster(at)mailz(dot)de> |
---|---|
To: | pgsql-docs(at)postgresql(dot)org |
Subject: | Streaming Replication and Hash Indices |
Date: | 2016-01-18 12:15:28 |
Message-ID: | 17792594-F751-46ED-BFBD-7FDF9092A6FA@mailz.de |
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Lists: | pgsql-docs |
Hi list,
today i got bitten by the issue that streaming replication does not replicate "hash" indices as those changes are not written to WAL. That fact is documented here:
http://www.postgresql.org/docs/current/static/indexes-types.html
But i could not find that information anywhere else like:
https://wiki.postgresql.org/wiki/Streaming_Replication#Restrictions
or
http://www.postgresql.org/docs/current/static/warm-standby.html
I suppose it would be very helpful to add it there, as the usual policy for "corrupt slave data" is to recreate the slave from a base_backup which would make you into thinking that the issue was fixed.
That is wrong though, as it will reappear after some time when the data in the table and the index diverge :)!
Regards,
Seb
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