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https://issues.apache.org/jira/browse/HDFS-16277?focusedWorklogId=668256&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-668256
 ]

ASF GitHub Bot logged work on HDFS-16277:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 21/Oct/21 10:04
            Start Date: 21/Oct/21 10:04
    Worklog Time Spent: 10m 
      Work Description: hadoop-yetus commented on pull request #3559:
URL: https://github.com/apache/hadoop/pull/3559#issuecomment-948455272


   :confetti_ball: **+1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
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   |||| _ Prechecks _ |
   | +1 :green_heart: |  dupname  |   0m  0s |  |  No case conflicting files 
found.  |
   | +0 :ok: |  codespell  |   0m  0s |  |  codespell was not available.  |
   | +0 :ok: |  markdownlint  |   0m  0s |  |  markdownlint was not available.  
|
   | +1 :green_heart: |  @author  |   0m  0s |  |  The patch does not contain 
any @author tags.  |
   | +1 :green_heart: |  test4tests  |   0m  0s |  |  The patch appears to 
include 2 new or modified test files.  |
   |||| _ trunk Compile Tests _ |
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   | +1 :green_heart: |  compile  |   1m 21s |  |  trunk passed with JDK 
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   | +1 :green_heart: |  compile  |   1m 17s |  |  trunk passed with JDK 
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10  |
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Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04  |
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Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10  |
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   | +1 :green_heart: |  shadedclient  |  21m 39s |  |  branch has no errors 
when building and testing our client artifacts.  |
   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   1m 12s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   1m 13s |  |  the patch passed with JDK 
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04  |
   | +1 :green_heart: |  javac  |   1m 13s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   1m  9s |  |  the patch passed with JDK 
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10  |
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issues.  |
   | -0 :warning: |  checkstyle  |   0m 52s | 
[/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3559/8/artifact/out/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt)
 |  hadoop-hdfs-project/hadoop-hdfs: The patch generated 16 new + 230 unchanged 
- 1 fixed = 246 total (was 231)  |
   | +1 :green_heart: |  mvnsite  |   1m 15s |  |  the patch passed  |
   | +1 :green_heart: |  xml  |   0m  1s |  |  The patch has no ill-formed XML 
file.  |
   | +1 :green_heart: |  javadoc  |   0m 47s |  |  the patch passed with JDK 
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04  |
   | +1 :green_heart: |  javadoc  |   1m 20s |  |  the patch passed with JDK 
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10  |
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   | +1 :green_heart: |  shadedclient  |  21m 23s |  |  patch has no errors 
when building and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | +1 :green_heart: |  unit  | 227m 53s |  |  hadoop-hdfs in the patch 
passed.  |
   | +1 :green_heart: |  asflicense  |   0m 47s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 323m 37s |  |  |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.41 ServerAPI=1.41 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3559/8/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/3559 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
mvnsite unit shadedclient spotbugs checkstyle codespell xml markdownlint |
   | uname | Linux cabb3364f533 4.15.0-156-generic #163-Ubuntu SMP Thu Aug 19 
23:31:58 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux |
   | Build tool | maven |
   | Personality | dev-support/bin/hadoop.sh |
   | git revision | trunk / 91b8d430f8e7e85062300f4c8e3019b46477ac2c |
   | Default Java | Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
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/usr/lib/jvm/java-8-openjdk-amd64:Private 
Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3559/8/testReport/ |
   | Max. process+thread count | 2914 (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-3559/8/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: 668256)
    Time Spent: 2h 10m  (was: 2h)

> improve decision in AvailableSpaceBlockPlacementPolicy
> ------------------------------------------------------
>
>                 Key: HDFS-16277
>                 URL: https://issues.apache.org/jira/browse/HDFS-16277
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: block placement
>    Affects Versions: 3.3.1
>            Reporter: guo
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 2h 10m
>  Remaining Estimate: 0h
>
> Hi 
> In product environment,we may meet two or more datanode usage reaches nealy 
> 100%,for exampe 99.99%,98%,97%.
> if we configure `AvailableSpaceBlockPlacementPolicy` , we also have the 
> chance to choose the 99.99%(assume it is the highest usage),for we treat the 
> two choosen datanode as the same usage if their storage usage are different 
> within 5%.
> but this is not what we want, so i suggest we can improve the decision.



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