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https://issues.apache.org/jira/browse/HDFS-12143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16100591#comment-16100591
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Hudson commented on HDFS-12143:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #12053 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/12053/])
HDFS-12143. Improve performance of getting and removing inode features.
(kihwal: rev 1a79dcfc457969d6a6c08ffffe4152fd7638e48a)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeWithAdditionalFields.java
> Improve performance of getting and removing inode features
> ----------------------------------------------------------
>
> Key: HDFS-12143
> URL: https://issues.apache.org/jira/browse/HDFS-12143
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 2.8.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Fix For: 2.9.0, 3.0.0-beta1, 2.8.3
>
> Attachments: HDFS-12143.patch
>
>
> Getting a feature uses an iterator which is less performant than an indexed
> for loop. Feature lookups are becoming more prolific so cycles count.
> Removing a feature requires building a string for up to 3 precondition
> checks. The worst case of 3 is the penalty for a successful removal.
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