Hannes Dorbath <[EMAIL PROTECTED]> 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

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