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https://issues.apache.org/jira/browse/HDFS-12853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16451148#comment-16451148
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Hudson commented on HDFS-12853:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14057 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14057/])
HDFS-12853. Ozone: Optimize chunk writes for Ratis by avoiding double
(szetszwo: rev 886b2cb6e797ab7d742dc2ceaeff818ee656b6cc)
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/scm/ScmConfigKeys.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/ozone/container/common/impl/TestContainerPersistence.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/container/common/transport/server/ratis/ContainerStateMachine.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/ozone/OzoneConsts.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/ozone/OzoneConfigKeys.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/proto/DatanodeContainerProtocol.proto
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/container/common/impl/Dispatcher.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/container/common/interfaces/ChunkManager.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/ozone/container/metrics/TestContainerMetrics.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/container/common/transport/server/ratis/XceiverServerRatis.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/container/common/impl/ChunkManagerImpl.java
> Ozone: Optimize chunk writes for Ratis by avoiding double writes
> ----------------------------------------------------------------
>
> Key: HDFS-12853
> URL: https://issues.apache.org/jira/browse/HDFS-12853
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Affects Versions: HDFS-7240
> Reporter: Mukul Kumar Singh
> Assignee: Mukul Kumar Singh
> Priority: Major
> Fix For: HDFS-7240
>
> Attachments: HDFS-12853-HDFS-7240.001.patch,
> HDFS-12853-HDFS-7240.002.patch
>
>
> Ozone, in replicated mode writes the data twice, once to the raft log and
> then to the statemachine.
> This results in the data being written twice during a particular chunk write,
> this is subobtimal. With RATIS-122 the statemachine in Ozone can be optimized
> by writing the data to the statemachine only once.
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