[jira] [Updated] (AVRO-1220) Dead lock

["Doug Cutting (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AVRO-1220?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Doug Cutting updated AVRO-1220:
-------------------------------

    Resolution: Fixed
      Assignee: Doug Cutting
        Status: Resolved  (was: Patch Available)

I committed this.
                
> Dead lock 
> ----------
>
>                 Key: AVRO-1220
>                 URL: https://issues.apache.org/jira/browse/AVRO-1220
>             Project: Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.7.3
>         Environment: OSX, JDK6
>            Reporter: Stéphane Landelle
>            Assignee: Doug Cutting
>             Fix For: 1.7.4
>
>         Attachments: AVRO-1220.txt, AVRO-1220.txt
>
>
> I experience a dead lock when running multiple DataFileReader in concurrent threads.
> See test case here:
> https://github.com/slandelle/avro-test
> AvroBinaryEncodingTest randomly stalls about 50% of the time.
> A thread dump would show a dead lock in org.apache.avro.io.parsing.Symbol class initialization.
> IHMO, the problem is that the Symbol class has static final members that are instances of Symbol subclasses.
> I built a custom version of avro where all the constants (NULL, BOOLEAN, INT, etc) have been extracted into a dedicated class outside of Symbol hierarchy and the test case now runs fine.
> Cheers,
> Stéphane Landelle

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