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https://issues.apache.org/jira/browse/HDFS-17534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17853955#comment-17853955
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ASF GitHub Bot commented on HDFS-17534:
---------------------------------------

hadoop-yetus commented on PR #6861:
URL: https://github.com/apache/hadoop/pull/6861#issuecomment-2160063816

   :broken_heart: **-1 overall**
   
   
   
   
   
   
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   |||| _ trunk Compile Tests _ |
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   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   0m 20s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   0m 21s |  |  the patch passed with JDK 
Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2  |
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issues.  |
   | -0 :warning: |  checkstyle  |   0m 10s | 
[/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-rbf.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/6/artifact/out/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-rbf.txt)
 |  hadoop-hdfs-project/hadoop-hdfs-rbf: The patch generated 2 new + 1 
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   |||| _ Other Tests _ |
   | -1 :x: |  unit  |  25m 43s | 
[/patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/6/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt)
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   | +1 :green_heart: |  asflicense  |   0m 22s |  |  The patch does not 
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   |  |   | 114m 37s |  |  |
   
   
   | Reason | Tests |
   |-------:|:------|
   | Failed junit tests | 
hadoop.hdfs.server.federation.router.TestRouterRpcMultiDestination |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.45 ServerAPI=1.45 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/6/artifact/out/Dockerfile
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   | GITHUB PR | https://github.com/apache/hadoop/pull/6861 |
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   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/6/testReport/ |
   | Max. process+thread count | 4247 (vs. ulimit of 5500) |
   | modules | C: hadoop-hdfs-project/hadoop-hdfs-rbf U: 
hadoop-hdfs-project/hadoop-hdfs-rbf |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6861/6/console |
   | versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
   | Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
   
   
   This message was automatically generated.
   
   




> RBF: Support leader follower mode for multiple subclusters
> ----------------------------------------------------------
>
>                 Key: HDFS-17534
>                 URL: https://issues.apache.org/jira/browse/HDFS-17534
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: rbf
>            Reporter: Yuanbo Liu
>            Assignee: Yuanbo Liu
>            Priority: Major
>              Labels: pull-request-available
>
> Currently there are five modes in multiple subclusters like
> HASH, LOCAL, RANDOM, HASH_ALL,SPACE;
> Proposal a new mode called leader/follower mode. routers try to write to 
> leader subcluster as many as possible. When routers read data, put leader 
> subcluster into first rank.



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