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https://issues.apache.org/jira/browse/HDFS-4397?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE updated HDFS-4397:
-----------------------------------------
Attachment: h4397_20120113.patch
h4397_20120113.patch:
- changes TestINodeDirectoryWithSnapshot to test combinePostDiff;
- fixes some bugs in combinePostDiff;
- uses combinePostDiff in getChildrenList().
> Combined diff may not be identical to the diffs applied sequentially
> --------------------------------------------------------------------
>
> Key: HDFS-4397
> URL: https://issues.apache.org/jira/browse/HDFS-4397
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Attachments: h4397_20120113.patch
>
>
> Let diffs
> {noformat}
> d(1,k) = m_1 + m_2 + ... + m_k;
> d(k+1,n) = m_{k+1} + m_{k+2} + ... + m_n;
> {noformat}
> and
> {noformat}
> d(1,n) = m_1 + m_2 + ... + m_n,
> {noformat}
> where m_j denote modifications. Then, we may have
> {noformat}
> d(1,k) + d(k+1,n) != d(1,n).
> {noformat}
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