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https://issues.apache.org/jira/browse/HDFS-5464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo Nicholas Sze updated HDFS-5464:
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Attachment: h5464_20140715.patch
Some new idea inspired by HDFS-6658.
h5464_20140715.patch: marks visited blocks by setting length n to (-n-1).
> Simplify block report diff calculation
> --------------------------------------
>
> Key: HDFS-5464
> URL: https://issues.apache.org/jira/browse/HDFS-5464
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Tsz Wo Nicholas Sze
> Priority: Minor
> Attachments: h5464_20131105.patch, h5464_20131105b.patch,
> h5464_20131105c.patch, h5464_20140715.patch
>
>
> The current calculation in BlockManager.reportDiff(..) is unnecessarily
> complicated. We could simplify the calculation.
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