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https://issues.apache.org/jira/browse/HDFS-17484?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17839911#comment-17839911
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ASF GitHub Bot commented on HDFS-17484:
---------------------------------------

hadoop-yetus commented on PR #6758:
URL: https://github.com/apache/hadoop/pull/6758#issuecomment-2071256591

   :broken_heart: **-1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
   |||| _ Prechecks _ |
   | +1 :green_heart: |  dupname  |   0m 01s |  |  No case conflicting files 
found.  |
   | +0 :ok: |  spotbugs  |   0m 00s |  |  spotbugs executables are not 
available.  |
   | +0 :ok: |  codespell  |   0m 00s |  |  codespell was not available.  |
   | +0 :ok: |  detsecrets  |   0m 00s |  |  detect-secrets was not available.  
|
   | +0 :ok: |  xmllint  |   0m 00s |  |  xmllint was not available.  |
   | +1 :green_heart: |  @author  |   0m 00s |  |  The patch does not contain 
any @author tags.  |
   | +1 :green_heart: |  test4tests  |   0m 00s |  |  The patch appears to 
include 1 new or modified test files.  |
   |||| _ trunk Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |  89m 50s |  |  trunk passed  |
   | +1 :green_heart: |  compile  |   5m 55s |  |  trunk passed  |
   | +1 :green_heart: |  checkstyle  |   4m 58s |  |  trunk passed  |
   | +1 :green_heart: |  mvnsite  |   6m 30s |  |  trunk passed  |
   | +1 :green_heart: |  javadoc  |   5m 47s |  |  trunk passed  |
   | +1 :green_heart: |  shadedclient  | 148m 26s |  |  branch has no errors 
when building and testing our client artifacts.  |
   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   4m 49s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   3m 26s |  |  the patch passed  |
   | +1 :green_heart: |  javac  |   3m 26s |  |  the patch passed  |
   | -1 :x: |  blanks  |   0m 00s | 
[/blanks-eol.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6758/1/artifact/out/blanks-eol.txt)
 |  The patch has 1 line(s) that end in blanks. Use git apply --whitespace=fix 
<<patch_file>>. Refer https://git-scm.com/docs/git-apply  |
   | +1 :green_heart: |  checkstyle  |   2m 19s |  |  the patch passed  |
   | +1 :green_heart: |  mvnsite  |   4m 03s |  |  the patch passed  |
   | +1 :green_heart: |  javadoc  |   3m 27s |  |  the patch passed  |
   | +1 :green_heart: |  shadedclient  | 158m 13s |  |  patch has no errors 
when building and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | +1 :green_heart: |  asflicense  |   5m 29s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 423m 09s |  |  |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | GITHUB PR | https://github.com/apache/hadoop/pull/6758 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets xmllint |
   | uname | MINGW64_NT-10.0-17763 be352c545e0b 3.4.10-87d57229.x86_64 
2024-02-14 20:17 UTC x86_64 Msys |
   | Build tool | maven |
   | Personality | /c/hadoop/dev-support/bin/hadoop.sh |
   | git revision | trunk / b01d3bcf66844d7f7f66c04a496d8dcc39cddae6 |
   | Default Java | Azul Systems, Inc.-1.8.0_332-b09 |
   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6758/1/testReport/
 |
   | modules | C: hadoop-hdfs-project/hadoop-hdfs U: 
hadoop-hdfs-project/hadoop-hdfs |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6758/1/console
 |
   | versions | git=2.44.0.windows.1 |
   | Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
   
   
   This message was automatically generated.
   
   




> Introduce redundancy.considerLoad.minLoad to avoiding excluding nodes when 
> they are not busy actually
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-17484
>                 URL: https://issues.apache.org/jira/browse/HDFS-17484
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 3.4.0
>            Reporter: farmmamba
>            Assignee: farmmamba
>            Priority: Minor
>              Labels: pull-request-available
>
> Currently, we have `dfs.namenode.redundancy.considerLoad` equals true by 
> default, and 
> dfs.namenode.redundancy.considerLoad.factor equals 2.0 by default.
> Think about below situation. when we are doing stress test, we may deploy 
> hdfs client onto the datanode. So, this hdfs client will prefer to write to 
> its local datanode and increase this machine's load.  Suppose we have 3 
> datanodes, the load of them are as below:  5.0, 0.2, 0.3.
>  
> The load equals to 5.0 will be excluded when choose datanodes for a block. 
> But actually, it is not slow node when load equals to 5.0 for a machine with 
> 80 cpu cores.
>  
> So, we should better add a new configuration entry :  
> `dfs.namenode.redundancy.considerLoad.minLoad` to indicate the mininum factor 
> we will make considerLoad take effect.



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