diff options
Diffstat (limited to 'src/backend/commands/cluster.c')
| -rw-r--r-- | src/backend/commands/cluster.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c index d781f79b641..736e74882de 100644 --- a/src/backend/commands/cluster.c +++ b/src/backend/commands/cluster.c @@ -11,7 +11,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/commands/cluster.c,v 1.163 2007/09/10 21:59:37 alvherre Exp $ + * $PostgreSQL: pgsql/src/backend/commands/cluster.c,v 1.164 2007/09/29 18:05:20 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -422,6 +422,20 @@ check_index_is_clusterable(Relation OldHeap, Oid indexOid, bool recheck) } /* + * Disallow if index is left over from a failed CREATE INDEX CONCURRENTLY; + * it might well not contain entries for every heap row, or might not even + * be internally consistent. (But note that we don't check indcheckxmin; + * the worst consequence of following broken HOT chains would be that we + * might put recently-dead tuples out-of-order in the new table, and there + * is little harm in that.) + */ + if (!OldIndex->rd_index->indisvalid) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("cannot cluster on invalid index \"%s\"", + RelationGetRelationName(OldIndex)))); + + /* * Disallow clustering system relations. This will definitely NOT work * for shared relations (we have no way to update pg_class rows in other * databases), nor for nailed-in-cache relations (the relfilenode values |