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https://issues.apache.org/jira/browse/HDFS-9557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15060629#comment-15060629
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Hudson commented on HDFS-9557:
------------------------------
SUCCESS: Integrated in Hadoop-trunk-Commit #8976 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/8976/])
HDFS-9557. Reduce object allocation in PB conversion. Contributed by (cnauroth:
rev c470c8953d4927043b6383fad8e792289c634c09)
*
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocolPB/PBHelperClient.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocolPB/TestPBHelper.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/PBHelper.java
> Reduce object allocation in PB conversion
> -----------------------------------------
>
> Key: HDFS-9557
> URL: https://issues.apache.org/jira/browse/HDFS-9557
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs-client
> Affects Versions: 2.8.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Fix For: 2.8.0
>
> Attachments: HDFS-9557.patch, HDFS-9557.patch
>
>
> PB conversions use {{ByteString.copyFrom}} to populate the builder.
> Unfortunately this creates unique instances for empty arrays instead of
> returning the singleton {{ByteString.EMPTY}}.
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