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Fix hot standby bug with GiST scans.

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Don't reset the rightlink of a page when replaying a page update record.
This was a leftover from pre-hot standby days, when it was not possible to
have scans concurrent with WAL replay. Resetting the right-link was not
necessary back then either, but it was done for the sake of tidiness. But
with hot standby, it's wrong, because a concurrent scan might still need it.

Backpatch all versions with hot standby, 9.0 and above.
This commit is contained in:
Heikki Linnakangas 2014-04-08 14:47:24 +03:00
parent 38a2b95c34
commit 7ca32e255b
1 changed files with 0 additions and 1 deletions
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src/backend/access/gist/gistxlog.c
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@ -182,7 +182,6 @@ gistRedoPageUpdateRecord(XLogRecPtr lsn, XLogRecord *record)
GistPageSetLeaf(page); GistPageSetLeaf(page);
} }
GistPageGetOpaque(page)->rightlink = InvalidBlockNumber;
PageSetLSN(page, lsn); PageSetLSN(page, lsn);
MarkBufferDirty(buffer); MarkBufferDirty(buffer);
UnlockReleaseBuffer(buffer); UnlockReleaseBuffer(buffer);