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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-8184) [linearstore] Recovery intermittently produces JERR_EFP_BADEFPDIRNAME error followed by core
Date Mon, 07 May 2018 21:03:00 GMT

    [ https://issues.apache.org/jira/browse/QPID-8184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16466470#comment-16466470
] 

ASF subversion and git services commented on QPID-8184:
-------------------------------------------------------

Commit 3a37ceed5faf667c6a0e45e023bb1d4fced66b75 in qpid-cpp's branch refs/heads/master from
[~kpvdr]
[ https://git-wip-us.apache.org/repos/asf?p=qpid-cpp.git;h=3a37cee ]

QPID-8184: Recovery intermittently produces JERR_EFP_BADEFPDIRNAME error followed by core:
Fix by Pavel Moravec


> [linearstore] Recovery intermittently produces JERR_EFP_BADEFPDIRNAME error followed
by core
> --------------------------------------------------------------------------------------------
>
>                 Key: QPID-8184
>                 URL: https://issues.apache.org/jira/browse/QPID-8184
>             Project: Qpid
>          Issue Type: Bug
>          Components: C++ Broker
>            Reporter: Kim van der Riet
>            Assignee: Kim van der Riet
>            Priority: Major
>
> Some users are experiencing difficulty recovering the store, especially when there are
a large  number of queues (several thousand). The log files show the following pattern:
> {{JERR_EFP_BADEFPDIRNAME}} in which some arbitrary number which is not divisible by 4
is being used as the EFP file size (called EFP directory in the log), followed by a segfault:
> {noformat}
> May 4 18:55:00 prodrhs1l qpidd[6240]: 2018-05-04 18:55:00 [Store] warning Linear Store:
EmptyFilePool create failed: jexception 0x0d03 EmptyFilePool::fileSizeKbFromDirName() threw
JERR_EFP_BADEFPDIRNAME: Bad Empty File Pool directory name (must be 'NNNk', where NNN is a
number which is a multiple of 4) (Partition: 1; EFP directory: '9k')
> May 4 18:55:00 prodrhs1l kernel: qpidd[6240]: segfault at 10 ip 00007f4219af8e19 sp 00007ffc227a6350
error 4 in linearstore.so[7f4219ac4000+bd000]{noformat}
>  In the event that the random number _is_ divisible by 4, a randomly sized directory
containing no files may appear in the partition EFP.



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