Christopher Browne cbbrowne at ca.afilias.info
Tue Jun 12 08:58:07 PDT 2007
Christopher Browne wrote:
> There still seem to be some problems with the SYNC ID handling with log
> shipping.
>
> Attached is a sample:
>
> tar tfvj
> /tmp/logshipsample.tar.bz2                                               =

> -rw-r--r-- cbbrowne/users 124484 2007-06-12 15:18 logship_dump.sql
> drwxr-xr-x cbbrowne/users      0 2007-06-12 15:33 archive_logs_2/
> -rw-r--r-- cbbrowne/users 230937 2007-06-12 15:18
> archive_logs_2/slony1_log_1_00000000000000000023.sql
> -rw-r--r-- cbbrowne/users    574 2007-06-12 15:18
> archive_logs_2/slony1_log_1_00000000000000000024.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:18
> archive_logs_2/slony1_log_1_00000000000000000025.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:18
> archive_logs_2/slony1_log_1_00000000000000000026.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:18
> archive_logs_2/slony1_log_1_00000000000000000027.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:18
> archive_logs_2/slony1_log_1_00000000000000000028.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:19
> archive_logs_2/slony1_log_1_00000000000000000029.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:19
> archive_logs_2/slony1_log_1_00000000000000000030.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:19
> archive_logs_2/slony1_log_1_00000000000000000031.sql
> -rw-r--r-- cbbrowne/users    574 2007-06-12 15:19
> archive_logs_2/slony1_log_1_00000000000000000032.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:19
> archive_logs_2/slony1_log_1_00000000000000000033.sql
> -rw-r--r-- cbbrowne/users    574 2007-06-12 15:19
> archive_logs_2/slony1_log_1_00000000000000000034.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:20
> archive_logs_2/slony1_log_1_00000000000000000035.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:20
> archive_logs_2/slony1_log_1_00000000000000000036.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:20
> archive_logs_2/slony1_log_1_00000000000000000037.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:20
> archive_logs_2/slony1_log_1_00000000000000000038.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:20
> archive_logs_2/slony1_log_1_00000000000000000039.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:21
> archive_logs_2/slony1_log_1_00000000000000000040.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:21
> archive_logs_2/slony1_log_1_00000000000000000041.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:21
> archive_logs_2/slony1_log_1_00000000000000000042.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:21
> archive_logs_2/slony1_log_1_00000000000000000043.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:21
> archive_logs_2/slony1_log_1_00000000000000000044.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:21
> archive_logs_2/slony1_log_1_00000000000000000045.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:21
> archive_logs_2/slony1_log_1_00000000000000000046.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000047.sql
> -rw-r--r-- cbbrowne/users 106699 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000048.sql
> -rw-r--r-- cbbrowne/users  70512 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000049.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000050.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000051.sql
> -rw-r--r-- cbbrowne/users    592 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000052.sql
> -rw-r--r-- cbbrowne/users    592 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000053.sql
> -rw-r--r-- cbbrowne/users    592 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000054.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000055.sql
> -rw-r--r-- cbbrowne/users    775 2007-06-12 15:30
> archive_logs_2/slony1_log_1_00000000000000000056.sql
> -rw-r--r-- cbbrowne/users    592 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000057.sql
> -rw-r--r-- cbbrowne/users    592 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000058.sql
> -rw-r--r-- cbbrowne/users    573 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000059.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:22
> archive_logs_2/slony1_log_1_00000000000000000060.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:23
> archive_logs_2/slony1_log_1_00000000000000000061.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:23
> archive_logs_2/slony1_log_1_00000000000000000062.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:23
> archive_logs_2/slony1_log_1_00000000000000000063.sql
> -rw-r--r-- cbbrowne/users    572 2007-06-12 15:23
> archive_logs_2/slony1_log_1_00000000000000000064.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:23
> archive_logs_2/slony1_log_1_00000000000000000065.sql
> -rw-r--r-- cbbrowne/users    574 2007-06-12 15:23
> archive_logs_2/slony1_log_1_00000000000000000066.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:24
> archive_logs_2/slony1_log_1_00000000000000000067.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:24
> archive_logs_2/slony1_log_1_00000000000000000068.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:24
> archive_logs_2/slony1_log_1_00000000000000000069.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:24
> archive_logs_2/slony1_log_1_00000000000000000070.sql
> -rw-r--r-- cbbrowne/users 100296 2007-06-12 15:24
> archive_logs_2/slony1_log_1_00000000000000000072.sql
> -rw-r--r-- cbbrowne/users 333575 2007-06-12 15:24
> archive_logs_2/slony1_log_1_00000000000000000076.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:25
> archive_logs_2/slony1_log_1_00000000000000000077.sql
> -rw-r--r-- cbbrowne/users    575 2007-06-12 15:25
> archive_logs_2/slony1_log_1_00000000000000000078.sql
> -rwxr-x--- cbbrowne/users    734 2007-06-12 15:35 init_schema.sql
>
> - logship_dump.sql is the output of the slony1_dump.sh script
> - init_schema.sql is the initial schema.
>
> Everything goes well until log #52...  For some reason file #52 (which
> represents a STORE TRIGGER request) steps backwards to SYNC #10.
>
> cbbrowne at dba2:/tmp/slony-regress.P29121> grep "setsyncTracking_offline("
> archive_logs_2/slony1_log_1_0000000000000000005*
> archive_logs_2/slony1_log_1_00000000000000000050.sql:select
> "_slony_regress1".setsyncTracking_offline(1, '49', '50', '2007-06-12
> 15:22:21.551594');
> archive_logs_2/slony1_log_1_00000000000000000051.sql:select
> "_slony_regress1".setsyncTracking_offline(1, '50', '51', '2007-06-12
> 15:22:31.608051');
> archive_logs_2/slony1_log_1_00000000000000000052.sql:select
> "_slony_regress1".setsyncTracking_offline(1, '10', '52', '2007-06-12
> 15:22:31.600417');
> archive_logs_2/slony1_log_1_00000000000000000053.sql:select
> "_slony_regress1".setsyncTracking_offline(1, '52', '53', '2007-06-12
> 15:22:31.673911');
> archive_logs_2/slony1_log_1_00000000000000000054.sql:select
> "_slony_regress1".setsyncTracking_offline(1, '53', '54', '2007-06-12
> 15:22:31.703325');
> archive_logs_2/slony1_log_1_00000000000000000055.sql:select
> "_slony_regress1".setsyncTracking_offline(1, '51', '55', '2007-06-12
> 15:22:31.734366');
> archive_logs_2/slony1_log_1_00000000000000000056.sql:select
> "_slony_regress1".setsyncTracking_offline(1, '55', '56', '2007-06-12
> 15:22:31.734366');
> archive_logs_2/slony1_log_1_00000000000000000057.sql:select
> "_slony_regress1".setsyncTracking_offline(1, '56', '57', '2007-06-12
> 15:22:31.843888');
> archive_logs_2/slony1_log_1_00000000000000000058.sql:select
> "_slony_regress1".setsyncTracking_offline(1, '57', '58', '2007-06-12
> 15:22:31.873121');
> archive_logs_2/slony1_log_1_00000000000000000059.sql:select
> "_slony_regress1".setsyncTracking_offline(1, '55', '59', '2007-06-12
> 15:22:41.6803');
>
>
> There are three interesting files that have "out of sequence" SYNC ID
> combinations:
>
> 1. File #52 - for a STORE TRIGGER
>
> The "start SYNC" of 10 seems pretty wacky.
>
> 2.  File #55 - which appears to be a SYNC (with no data); jumps back to
> #51 as the "start SYNC".
>
> 3.  File #59 - which again appears to be a SYNC (albeit with no data).
>
> I'm quite proud of the test case, in some ways; here's the Slonik script
> that requested the DDL change (found in file #56):
>
>   store trigger (table id=3D1, trigger name=3D'nonexistant trigger', event
> node=3D1);
>   store trigger (table id=3D1, trigger name=3D'another nonexistant trigge=
r',
> event node=3D1);
>   store trigger (table id=3D1, trigger name=3D'still another nonexistant
> trigger', event node=3D1);
>   EXECUTE SCRIPT (
>        SET ID =3D 1,
>        FILENAME =3D '${testname}/ddl_updates.sql',
>        EVENT NODE =3D 1
>     );
>   store trigger (table id=3D1, trigger name=3D'late, another nonexistant
> trigger', event node=3D1);
>   store trigger (table id=3D1, trigger name=3D'late, still another
> nonexistant trigger', event node=3D1);
>
> Yes, I was intentionally abusive in having that set of STORE TRIGGER
> requests.  That it stirred up problems was the point of the exercise ;-).
> _______________________________________________
> Slony1-bugs mailing list
> Slony1-bugs at lists.slony.info
> http://lists.slony.info/mailman/listinfo/slony1-bugs
>   =


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