[jira] Updated: (AVRO-524) DataFileWriter.appendTo leads to intermittent IOException during write()

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

     [ https://issues.apache.org/jira/browse/AVRO-524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Doug Cutting updated AVRO-524:
------------------------------

    Fix Version/s: 1.3.3
                       (was: 1.4.0)

> DataFileWriter.appendTo leads to intermittent IOException during write()
> ------------------------------------------------------------------------
>
>                 Key: AVRO-524
>                 URL: https://issues.apache.org/jira/browse/AVRO-524
>             Project: Avro
>          Issue Type: Bug
>          Components: java
>            Reporter: Thiruvalluvan M. G.
>            Assignee: Thiruvalluvan M. G.
>             Fix For: 1.3.3
>
>         Attachments: AVRO-524.patch
>
>
> To append to a data file, we first open the file as RandomAccessFile in read-write mode, read some information such sync, seek to the end of the file and then use its FileDescriptor to create a FileOutputStream. Sharing a FileDescriptor this way could lead to problem if one of its containers is garbage-collected while the other is still in use. Please see: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6322678. The bug got fixed in Java 7 (b06). In our case, RandomAccessFile sometimes gets garbage-collected leading to write errors. If the Java unit-tests are run multiple times, this occurs about 25% of the time on my Windows machine and about 50% on my Ubuntu Linux box.

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