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https://issues.apache.org/jira/browse/QPID-8184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kim van der Riet resolved QPID-8184.
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Resolution: Fixed
> [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 somehostname 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 somehostname 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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