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https://issues.apache.org/jira/browse/HDFS-16270?focusedWorklogId=664656&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-664656
 ]

ASF GitHub Bot logged work on HDFS-16270:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 13/Oct/21 14:13
            Start Date: 13/Oct/21 14:13
    Worklog Time Spent: 10m 
      Work Description: hadoop-yetus commented on pull request #3547:
URL: https://github.com/apache/hadoop/pull/3547#issuecomment-942349833


   :broken_heart: **-1 overall**
   
   
   
   
   
   
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   |:----:|----------:|--------:|:--------:|:-------:|
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   |||| _ trunk Compile Tests _ |
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   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   1m 14s |  |  the patch passed  |
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issues.  |
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   | +1 :green_heart: |  shadedclient  |  23m 54s |  |  patch has no errors 
when building and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | -1 :x: |  unit  | 383m 26s | 
[/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3547/1/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt)
 |  hadoop-hdfs in the patch passed.  |
   | +1 :green_heart: |  asflicense  |   0m 54s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 487m  4s |  |  |
   
   
   | Reason | Tests |
   |-------:|:------|
   | Failed junit tests | hadoop.hdfs.TestHDFSFileSystemContract |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.41 ServerAPI=1.41 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3547/1/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/3547 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
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   | uname | Linux b9993f782838 4.15.0-147-generic #151-Ubuntu SMP Fri Jun 18 
19:21:19 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux |
   | Build tool | maven |
   | Personality | dev-support/bin/hadoop.sh |
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Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3547/1/testReport/ |
   | Max. process+thread count | 2009 (vs. ulimit of 5500) |
   | modules | C: hadoop-hdfs-project/hadoop-hdfs U: 
hadoop-hdfs-project/hadoop-hdfs |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3547/1/console |
   | versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
   | Powered by | Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org |
   
   
   This message was automatically generated.
   
   


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 664656)
    Time Spent: 20m  (was: 10m)

> Improve NNThroughputBenchmark#printUsage() related to block size
> ----------------------------------------------------------------
>
>                 Key: HDFS-16270
>                 URL: https://issues.apache.org/jira/browse/HDFS-16270
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: benchmarks, namenode
>            Reporter: JiangHua Zhu
>            Assignee: JiangHua Zhu
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> When using the NNThroughputBenchmark test, if the usage is not correct, we 
> will get some prompt messages.
> E.g:
> '
> If connecting to a remote NameNode with -fs option, 
> dfs.namenode.fs-limits.min-block-size should be set to 16.
> 21/10/13 11:55:32 INFO util.ExitUtil: Exiting with status -1: ExitException
> '
> Yes, this way is good.
> However, the setting of'dfs.blocksize' has been completed before execution, 
> for example:
> conf.setInt(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, 16);
> We will still get the above prompt, which is wrong.
> At the same time, it should also be explained. The hint here should not be 
> for'dfs.namenode.fs-limits.min-block-size', but should be'dfs.blocksize'.
> Because in the NNThroughputBenchmark construction, 
> the'dfs.namenode.fs-limits.min-block-size' has been set to 0 in advance.



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