From: | Daniel Westermann <daniel(dot)westermann(at)dbi-services(dot)com> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
Subject: | Re: Deleting a table file does not raise an error when the table is touched afterwards, why? |
Date: | 2016-05-31 06:58:15 |
Message-ID: | 1949642905.5615257.1464677895030.JavaMail.zimbra@dbi-services.com |
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Thread: | |
Lists: | pgsql-general |
>> Alex Ignatov started a new thread was started on this topic as well...
>>
>> https://www.postgresql.org/message-id/c571dfc5-91b0-0df2-4e3f-45bc94c11759@postgrespro.ru
>>
>>I posted a link to this thread on his new one as well.
>>
>>David J.
for completeness: same issue with data checksums enabled:
(postgres(at)[local]:5555) [postgres] > show data_checksums ;
data_checksums
----------------
on
(1 row)
Steps to reproduce:
create table t1 ( a int );
insert into t1 values ( generate_series(1,1000000));
select count(*) from t1;
=> rm the table files
=> select count(*) still works
(postgres(at)[local]:5555) [postgres] > select count(*) from t1;
count
---------
1000000
(1 row)
=> then shutdown fast:
LOG: received fast shutdown request
LOG: aborting any active transactions
FATAL: terminating connection due to administrator command
LOG: autovacuum launcher shutting down
LOG: shutting down
FATAL: could not open file "base/13056/16384": No such file or directory
CONTEXT: writing block 2946 of relation base/13056/16384
LOG: checkpointer process (PID 3004) exited with exit code 1
LOG: terminating any other active server processes
LOG: abnormal database system shutdown
=> startup
LOG: database system shutdown was interrupted; last known up at 2016-05-31 10:52:17 CEST
LOG: database system was not properly shut down; automatic recovery in progress
LOG: redo starts at 0/7070808
LOG: record with zero length at 0/76EECD0
LOG: redo done at 0/76EEC68
LOG: last completed transaction was at log time 2016-05-31 10:51:27.689776+02
LOG: MultiXact member wraparound protections are now enabled
LOG: database system is ready to accept connections
LOG: autovacuum launcher started
(postgres(at)[local]:5555) [postgres] > select count(*) from t1;
count
--------
186450
(1 row)
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