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https://issues.apache.org/jira/browse/HADOOP-2110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12553487
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Doug Cutting commented on HADOOP-2110:
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BlockListAsLongs should not be public.
DatanodeProtocol's version should be incremented.
> Block Report Optimization: Replace class instance
> -------------------------------------------------
>
> Key: HADOOP-2110
> URL: https://issues.apache.org/jira/browse/HADOOP-2110
> Project: Hadoop
> Issue Type: Sub-task
> Components: dfs
> Affects Versions: 0.14.0
> Reporter: Robert Chansler
> Assignee: Sanjay Radia
> Fix For: 0.16.0
>
> Attachments: brAsLongsPatch2.txt, comaprison.txt
>
>
> Block report processing can be more efficient if instances of the block ID
> class are replaced with a sequence of longs.
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