Re: [PORTS] Port Bug Report: 1.backend crash when frontend do cluster (sometimes!?), 2.cluster does not work

Yea.  At least now, we have a repeatable CLUSTER bug.  Hope someone can
fix it soon.


>
> ============================================================================
>                         POSTGRESQL BUG REPORT TEMPLATE
> ============================================================================
>
>
> Your name               : Vladimir Dobrokhotov
> Your email address      : dvs@rybvod.kamchatka.su
>
> Category                : runtime: back-end
> Severity                : critical
>
> Summary: 1.backend crash when frontend do cluster (sometimes!?), 2.cluster does not work
>
> System Configuration
> --------------------
>   Operating System   : FreeBSD 2.2.5-RELEASE
>
>   PostgreSQL version : 6.5
>
>   Compiler used      : gcc 2.7.2.1
>
> Hardware:
> ---------
> Pentium, 32 RAM
>
> Versions of other tools:
> ------------------------
> gmake 3.75, flex 2.5.4
>
> --------------------------------------------------------------------------
>
> Problem Description:
> --------------------
> This problem come from pg6.2.
> cluster (unique index btree(4 filelds varchar(4))) not work - "cannot create unique index. Table contains non-unique
values."
> In pg6.4.2 command "cluster ind_un.." destroy all indexes on the table but index "ind_un" detroy fields form 2...
> In pg6.5 - random one from:
> 1) ERROR: cannot create unique index. Table contains non-unique values.
> 2) pgReadData() -- backend closed ... (need restart frontend)
> 3) pgReadData() -- backend closed ... (need restart backend, frontend)
> 4) pgReadData() -- backend closed ... (need restart backend, frontend, remove file "temp_1ddbc".)
>
>
> --------------------------------------------------------------------------
>
> Test Case:
> ----------
> =>create table sns (n1 varchar(4), n2 varchar(4), n3 varchar(4), n4 varchar(4), name text);
> CREATE
> =>insert into sns values ('0','00','','','a');
> INSERT 278624 1
> =>insert into sns values ('0','01','','','b');
> INSERT 278626 1
> =>create unique index sn_b on sns using btree(n1,n2,n3,n4);
> CREATE
> =>cluster sn_b on sns;
> ERROR: Cannot create unique index. Table contains non-unique values
> =>cluster sn_b on sns;
> pgReadData() -- backend closed the channel unexpectedly.
>    This probably means the backend terminated abnormally
>    before or while processing the request.
> We have lost the connection to backend, so further processing is impossible.
>  Terminating.
> #psql dv14
> Connection to database 'dv14' failed.
> connectDB() -- ...
> #su postgres
> $~/rc.local
>  postmaster.
> ^D#psql dv14
> Welcome to the POSTGRES interactive sql monitor.
> ...
> =>cluster sn_b on sns;
> ERROR: cannot create temp_44050
> (rm ~/data/base/dv14/temp_44050)
> =>cluster sn_b on sns;
> ERROR: Cannot create unique index. Table contains non-unique values
> =>cluster sn_b on sns;
> pgReadData() -- backend closed the channel unexpectedly.
>    This probably means the backend terminated abnormally
>    before or while processing the request.
> We have lost the connection to backend, so further processing is impossible.
>  Terminating.
> #psql dv14
> Welcome to the POSTGRES interactive sql monitor.
> ...
> =>
>
>
> --------------------------------------------------------------------------
>
> Solution:
> ---------
>
>
> --------------------------------------------------------------------------
>
>
>


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