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From "Kapil Thangavelu (JIRA)" <j...@apache.org>
Subject [jira] Updated: (ZOOKEEPER-768) zkpython segfault (assertion error in io thread)
Date Thu, 06 May 2010 17:00:50 GMT

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-768?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kapil Thangavelu updated ZOOKEEPER-768:
---------------------------------------

    Attachment: zkpython-segfault-client-log.txt

client log with debug logging on.

> zkpython segfault (assertion error in io thread)
> ------------------------------------------------
>
>                 Key: ZOOKEEPER-768
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-768
>             Project: Zookeeper
>          Issue Type: Bug
>          Components: contrib-bindings
>    Affects Versions: 3.4.0
>         Environment: ubuntu lucid (10.04), zookeeper trunk (java/c/zkpython)
>            Reporter: Kapil Thangavelu
>         Attachments: zkpython-segfault-client-log.txt, zkpython-segfault-stack-traces.txt,
zkpython-segfault.py
>
>
> While trying to create a test case showing slow average add_auth, i stumbled upon a test
case that reliably segfaults for me, albeit with variable amount of iterations (anwhere from
2 to 20). fwiw, I've got about 220 processes in my test environment (ubuntu lucid 10.04).
The test case opens a connection, adds authentication to it, and closes the connection, in
a loop. I'm including the sample program and the gdb stack traces from the core file. I can
upload the core file if thats helpful.

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