[erlang-questions] Mnesia ETS crash

Mike Oxford <>
Mon Aug 13 16:55:45 CEST 2012


No one has seen this before?

Thanks,

-mox

On Tue, Aug 7, 2012 at 11:25 AM, Mike Oxford <> wrote:

> Further information:
> 1)  The table is question does exist, has existed, and has been running
> for a while.
> 2)  safe_fixtable fails with badarg if the table does not exist.
>
> #1 runs for a good long while (month?) and then suddenly #2 pops up.
>  Why does mnesia 'lose' the table?
>
> Here's more context
>
> <snip>
> ===== ALIVE Tue Jul 31 17:22:07 PDT 2012
>
> ===== ALIVE Tue Jul 31 17:37:07 PDT 2012
>
> ===== ALIVE Tue Jul 31 17:52:07 PDT 2012
>
> ===== Tue Jul 31 18:04:17 PDT 2012
>
> =ERROR REPORT==== 31-Jul-2012::18:04:17 ===
> Error in process <0.15759.10> on node '<redacted>' with exit value:
> {badarg,
> [{ets,safe_fixtable,[px_channel_log,false]},{mnesia_lib,db_fixtable,3},
>
> {mnesia_loader,cleanup_tab_copier,3},{mnesia_loader,send_table,3},{mnesia_controller,send_and_reply,2}]}
>
>
> =====
> ===== LOGGING STARTED Tue Jul 31 18:04:19 PDT 2012
> =====
> Exec: /usr/local/chat-game-gwm/current/erts-5.8.4/bin/erlexec -boot
> /usr/local/chat-game-gwm/current/releases/1/chat -mode
> embedded -config /usr/local/chat-game-gwm/current/etc/app.config
> -args_file /usr/local/chat-game-gwm/current/etc/vm.args --
>  console
> Root: /usr/local/chat-game-gwm/current
> Erlang R14B03 (erts-5.8.4) [source] [64-bit] [smp:24:24] [rq:24]
> [async-threads:64] [hipe] [kernel-poll:true]
>
>
> =ERROR REPORT==== 31-Jul-2012::18:04:22 ===
> Mnesia('gwm_game@<redacted>'): ** ERROR ** mnesia_event got
> {inconsistent_database, starting_partitioned_network,
> 'gwm_game@<redacted>'}
> DEBUG: mnesia_helpers:118 - "{ \"Connecting to cluster: \" , NodeList }"
>
> </end_snip>
>
>
> On Mon, Aug 6, 2012 at 5:04 PM, Mike Oxford <> wrote:
>
>> =ERROR REPORT==== 18-Jun-2012::15:01:49 ===
>> Error in process <0.1743.0> on node '<redacted>' with exit value:
>> {badarg,[{ets,safe_fixtable,[px_channel_log,false]},{mnesia_lib,db_fixtable,3},{mnesia_loader,cleanup_tab_copier,3},{mnesia_loader,send_table,3},{mnesia_controller,send_and_re
>> ply,2}]}
>>
>> Logging shows it was then restarted and {inconsistent_database,
>> starting_partitioned_network...
>>
>> mnesia is Erlang R14B03 (erts-5.8.4) [source] [64-bit] [smp:24:24]
>> [rq:24] [async-threads:64] [hipe] [kernel-poll:true] so it shouldn't fall
>> victim to the safe_fixtable/next issues from R13x
>>
>> This has happened to us twice now, both times exactly the same error.
>>  System runs other ram_only nodes as well with no issues; this one is a
>> disc_ table with light load.
>>
>> Thoughts?
>>
>> -mox
>>
>>
>>
>>
>
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