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https://issues.apache.org/jira/browse/HADOOP-735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12465607
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Milind Bhandarkar commented on HADOOP-735:
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Indeed. This was necessary because the variable sized integer and longs were
throwing IOException in their read methods. The serialization of BytesWritable
uses int. For a record that contains only a buffer, the generated code was
catching IOException, and resulted in a compile-error for trying to catch an
exception that was not thrown. That's why it is part of this patch.
> The underlying data structure, ByteArrayOutputStream, for buffer type of
> Hadoop record is inappropriate
> --------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-735
> URL: https://issues.apache.org/jira/browse/HADOOP-735
> Project: Hadoop
> Issue Type: Bug
> Components: record
> Affects Versions: 0.9.2
> Reporter: Runping Qi
> Assigned To: Milind Bhandarkar
> Fix For: 0.11.0
>
> Attachments: BytesWritable.patch
>
>
> With ByteArrayOutputStream as the underlying data structure for a buffer, the
> user is forced to convert it into a byte [] object in order to do any
> operations other than sequence append on the buffer. The convertion will
> create a new copy of bytes. That will cause huge performance problem.
> It seems BytesWritable is a better replacement.
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