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Commit04fbe29

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Fix WAL replay of truncate operations to cope with the possibility that the
truncated relation was deleted later in the WAL sequence. Since replaynormally auto-creates a relation upon its first reference by a WAL log entry,failure is seen only if the truncate entry happens to be the first referenceafter the checkpoint we're restarting from; which is a pretty unusual case butof course not impossible. Fix by making truncate entries auto-create likethe other ones do. Per report and test case from Dharmendra Goyal.
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‎src/backend/storage/smgr/smgr.c

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@@ -11,7 +11,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/storage/smgr/smgr.c,v 1.104 2007/07/08 22:23:16 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/storage/smgr/smgr.c,v 1.105 2007/07/20 16:29:53 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
@@ -811,6 +811,14 @@ smgr_redo(XLogRecPtr lsn, XLogRecord *record)
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reln=smgropen(xlrec->rnode);
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/*
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* Forcibly create relation if it doesn't exist (which suggests that
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* it was dropped somewhere later in the WAL sequence). As in
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* XLogOpenRelation, we prefer to recreate the rel and replay the
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* log as best we can until the drop is seen.
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*/
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smgrcreate(reln, false, true);
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/* Can't use smgrtruncate because it would try to xlog */
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/*

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