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https://issues.apache.org/jira/browse/HDFS-13601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16486837#comment-16486837
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Hudson commented on HDFS-13601:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14260 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14260/])
HDFS-13601. Optimize ByteString conversions in PBHelper. (wang: rev
1d2640b6132e8308c07476badd2d1482be68a298)
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/DatanodeID.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocolPB/PBHelperClient.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/dev-support/findbugsExcludeFile.xml
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataXceiverBackwardsCompat.java
> Optimize ByteString conversions in PBHelper
> -------------------------------------------
>
> Key: HDFS-13601
> URL: https://issues.apache.org/jira/browse/HDFS-13601
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.1.0, 2.9.1
> Reporter: Andrew Wang
> Assignee: Andrew Wang
> Priority: Major
> Fix For: 2.10.0, 3.2.0, 3.1.1, 3.0.3
>
> Attachments: HDFS-13601.001.patch, HDFS-13601.002.patch,
> HDFS-13601.003.patch, HDFS-13601.004.patch
>
>
> While doing some profiling of the NN with JMC, I saw a lot of time being
> spent on String->ByteString conversions. These are often the same strings
> being converted over and over again, meaning there's room for optimization.
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