Horton

Re: [Proposal] Global temporary tables

tushar <tushar.ahuja@enterprisedb.com>

View thread
From: tushar <tushar.ahuja@enterprisedb.com>
To: 曾文旌 <wenjing.zwj@alibaba-inc.com>
Cc: Pavel Stehule <pavel.stehule@gmail.com>, Robert Haas <robertmhaas@gmail.com>, Prabhat Sahu <prabhat.sahu@enterprisedb.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: 2020-04-13T10:32:30Z
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 4/9/20 6:26 PM, 曾文旌 wrote:
>> On 4/7/20 2:27 PM, 曾文旌 wrote:
>>> Vacuum full GTT, cluster GTT is already supported in global_temporary_table_v24-pg13.patch.
>> Here , it is skipping GTT
>>
>> postgres=# \c foo
>> You are now connected to database "foo" as user "tushar".
>> foo=# create global temporary table  g123( c1 int) ;
>> CREATE TABLE
>> foo=# \q
>> [tushar@localhost bin]$ ./vacuumdb --full  foo
>> vacuumdb: vacuuming database "foo"
>> WARNING:  skipping vacuum global temp table "g123" because storage is not initialized for current session
> The message was inappropriate at some point, so I removed it.
>
Thanks Wenjing. Please see -if this below behavior is correct

X terminal -

postgres=# create global temp table foo1(n int);
CREATE TABLE
postgres=# insert into foo1 values (generate_series(1,10));
INSERT 0 10
postgres=# vacuum full ;
VACUUM

Y Terminal -

[tushar@localhost bin]$ ./vacuumdb -f  postgres
vacuumdb: vacuuming database "postgres"
WARNING:  global temp table oldest relfrozenxid 3276 is the oldest in 
the entire db
DETAIL:  The oldest relfrozenxid in pg_class is 3277
HINT:  If they differ greatly, please consider cleaning up the data in 
global temp table.
WARNING:  global temp table oldest relfrozenxid 3276 is the oldest in 
the entire db
DETAIL:  The oldest relfrozenxid in pg_class is 3277
HINT:  If they differ greatly, please consider cleaning up the data in 
global temp table.


-- 
regards,tushar
EnterpriseDB  https://www.enterprisedb.com/
The Enterprise PostgreSQL Company