Re: Index trouble with 8.3b4

Hannes Dorbath <light(at)theendofthetunnel(dot)de> writes:
> hannes=> CREATE INDEX CONCURRENTLY "ts_fts_tsv" ON "public"."fts" USING gin ("tsv");
> ERROR: item pointer (0,1) alreadt exists

> I was able to reproduce that error a few times, but not always. It seems
> it only happens with CONCURRENTLY.

> After creating a GIST index instead of GIN I tried to cluster on that:

> hannes=> CLUSTER fts USING ts_fts_tsv;
> ERROR: could not create unique index "pk_fts"
> DETAIL: Table contains duplicated values.
> So duplicate values in my PK column?

I didn't have any luck reproducing either of these behaviors --- maybe
it's data-dependent. Can you extract a test case?

regards, tom lane