Horton

Re: [Proposal] Global temporary tables

tushar <tushar.ahuja@enterprisedb.com>

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From: tushar <tushar.ahuja@enterprisedb.com>
To: 曾文旌 <wenjing.zwj@alibaba-inc.com>, Prabhat Sahu <prabhat.sahu@enterprisedb.com>
Cc: Pavel Stehule <pavel.stehule@gmail.com>, Robert Haas <robertmhaas@gmail.com>, Tomas Vondra <tomas.vondra@2ndquadrant.com>, Konstantin Knizhnik <k.knizhnik@postgrespro.ru>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>, 蔡松露(子嘉) <zijia@taobao.com>, "Cai, Le" <le.cai@alibaba-inc.com>, 萧少聪(铁庵) <shaocong.xsc@alibaba-inc.com>
Date: 2020-04-20T13:15:42Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. PageAddItemExtended(): Add LP_UNUSED assertion.

  2. Remove temporary files after backend crash

  3. Fix comment in indexing.c

  4. Fix failure to ignore leftover temp tables after a server crash.

On 4/20/20 2:59 PM, 曾文旌 wrote:
> Please check my new patch.

Thanks Wenjing. Please refer this below scenario , getting error -  
ERROR:  could not read block 0 in file "base/16466/t4_16472": read only 
0 of 8192 bytes

Steps to reproduce

Connect to psql terminal,create a table ( create global temp table t2 (n 
int primary key ) on commit delete rows;)
exit from psql terminal and execute (./clusterdb -t t2 -d postgres -v)
connect to psql terminal and one by one execute these below sql statements
(
cluster verbose t2 using t2_pkey;
cluster verbose t2 ;
alter table t2 add column i int;
cluster verbose t2 ;
cluster verbose t2 using t2_pkey;
create unique index ind on t2(n);
create unique index concurrently  ind1 on t2(n);
select * from t2;
)
This last SQL - will throw this error -  - ERROR:  could not read block 
0 in file "base/16466/t4_16472": read only 0 of 8192 bytes

-- 
regards,tushar
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