diff options
Diffstat (limited to 'src/backend/access/gist/gistbuild.c')
| -rw-r--r-- | src/backend/access/gist/gistbuild.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c index 4db896a533..e081e6571a 100644 --- a/src/backend/access/gist/gistbuild.c +++ b/src/backend/access/gist/gistbuild.c @@ -467,6 +467,18 @@ gist_indexsortbuild(GISTBuildState *state) pfree(levelstate->pages[0]); pfree(levelstate); + + /* + * When we WAL-logged index pages, we must nonetheless fsync index files. + * Since we're building outside shared buffers, a CHECKPOINT occurring + * during the build has no way to flush the previously written data to + * disk (indeed it won't know the index even exists). A crash later on + * would replay WAL from the checkpoint, therefore it wouldn't replay our + * earlier WAL entries. If we do not fsync those pages here, they might + * still not be on disk when the crash occurs. + */ + if (RelationNeedsWAL(state->indexrel)) + smgrimmedsync(RelationGetSmgr(state->indexrel), MAIN_FORKNUM); } /* |