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https://issues.apache.org/jira/browse/AVRO-524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12861988#action_12861988
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Doug Cutting commented on AVRO-524:
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Also, for the record, another way to fix the bug would be to simply retain a
pointer to the RandomAccessFile, no?
> 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: 1.4.0
>
> 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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