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https://issues.apache.org/jira/browse/HDFS-13227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16388612#comment-16388612
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Hudson commented on HDFS-13227:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #13783 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/13783/])
HDFS-13227. Add a method to calculate cumulative diff over multiple (szetszwo:
rev 346caa209571dedf1331b2658d5702b45dd40bfe)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/DirectoryWithSnapshotFeature.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/AbstractINodeDiffList.java
> Add a method to calculate cumulative diff over multiple snapshots in
> DirectoryDiffList
> ---------------------------------------------------------------------------------------
>
> Key: HDFS-13227
> URL: https://issues.apache.org/jira/browse/HDFS-13227
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: snapshots
> Reporter: Shashikant Banerjee
> Assignee: Shashikant Banerjee
> Priority: Minor
> Fix For: 3.2.0
>
> Attachments: HDFS-13227.001.patch
>
>
> This Jira proposes to add an API in DirectoryWithSnapshotFeature#f
> DirectoryDiffList which will return minimal list of diffs needed to combine
> to get the cumulative diff between two given snapshots. The same method will
> be made use while constructing the childrenList for a directory.
> DirectoryWithSnapshotFeature#getChildrenList andÂ
> DirectoryWithSnapshotFeature#computeDiffBetweenSnapshots will make use of the
> same method to get the cumulative diff. When snapshotSkipList, with minimal
> set of diffs to combine in order to get the cumulative diff, the overall
> computation will be faster.
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