[ https://issues.apache.org/jira/browse/HDFS-362?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uma Maheswara Rao G updated HDFS-362:
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Attachment: HDFS-362.patch
> FSEditLog should not writes long and short as UTF8 and should not use ArrayWritable for
writing non-array items
> ---------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-362
> URL: https://issues.apache.org/jira/browse/HDFS-362
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Uma Maheswara Rao G
> Attachments: HDFS-362.patch
>
>
> In FSEditLog,
> - long and short are first converted to String and are further converted to UTF8
> - For some non-array items, it first create an ArrayWritable object to hold all the items
and then writes the ArrayWritable object.
> These result creating many intermediate objects which affects Namenode CPU performance
and Namenode restart.
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