diff options
Diffstat (limited to 'src/backend/access/gist/gistget.c')
| -rw-r--r-- | src/backend/access/gist/gistget.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/backend/access/gist/gistget.c b/src/backend/access/gist/gistget.c index 46d08e06350..4e0c500a22e 100644 --- a/src/backend/access/gist/gistget.c +++ b/src/backend/access/gist/gistget.c @@ -377,6 +377,20 @@ gistScanPage(IndexScanDesc scan, GISTSearchItem *pageItem, double *myDistances, MemoryContextSwitchTo(oldcxt); } + /* + * Check if the page was deleted after we saw the downlink. There's + * nothing of interest on a deleted page. Note that we must do this + * after checking the NSN for concurrent splits! It's possible that + * the page originally contained some tuples that are visible to us, + * but was split so that all the visible tuples were moved to another + * page, and then this page was deleted. + */ + if (GistPageIsDeleted(page)) + { + UnlockReleaseBuffer(buffer); + return; + } + so->nPageData = so->curPageData = 0; scan->xs_hitup = NULL; /* might point into pageDataCxt */ if (so->pageDataCxt) |