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23 results

xlog.c

  • Tom Lane's avatar
    6cc4451b
    Prevent re-use of a deleted relation's relfilenode until after the next · 6cc4451b
    Tom Lane authored 
    checkpoint.  This guards against an unlikely data-loss scenario in which
we re-use the relfilenode, then crash, then replay the deletion and
recreation of the file.  Even then we'd be OK if all insertions into the
new relation had been WAL-logged ... but that's not guaranteed given all
the no-WAL-logging optimizations that have recently been added.

Patch by Heikki Linnakangas, per a discussion last month.
    6cc4451b
    History
    Prevent re-use of a deleted relation's relfilenode until after the next
    Tom Lane authored 
    checkpoint.  This guards against an unlikely data-loss scenario in which
we re-use the relfilenode, then crash, then replay the deletion and
recreation of the file.  Even then we'd be OK if all insertions into the
new relation had been WAL-logged ... but that's not guaranteed given all
the no-WAL-logging optimizations that have recently been added.

Patch by Heikki Linnakangas, per a discussion last month.