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https://issues.apache.org/jira/browse/HDFS-16509?focusedWorklogId=756246&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-756246
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ASF GitHub Bot logged work on HDFS-16509:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 13/Apr/22 08:33
            Start Date: 13/Apr/22 08:33
    Worklog Time Spent: 10m 
      Work Description: hadoop-yetus commented on PR #4077:
URL: https://github.com/apache/hadoop/pull/4077#issuecomment-1097711076

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
   | +0 :ok: |  reexec  |   0m 44s |  |  Docker mode activated.  |
   |||| _ Prechecks _ |
   | +1 :green_heart: |  dupname  |   0m  0s |  |  No case conflicting files 
found.  |
   | +0 :ok: |  codespell  |   0m  0s |  |  codespell 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 1 new or modified test files.  |
   |||| _ trunk Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |  38m 48s |  |  trunk passed  |
   | +1 :green_heart: |  compile  |   1m 29s |  |  trunk passed with JDK 
Ubuntu-11.0.14.1+1-Ubuntu-0ubuntu1.20.04  |
   | +1 :green_heart: |  compile  |   1m 19s |  |  trunk passed with JDK 
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  checkstyle  |   1m  6s |  |  trunk passed  |
   | +1 :green_heart: |  mvnsite  |   1m 31s |  |  trunk passed  |
   | +1 :green_heart: |  javadoc  |   1m  8s |  |  trunk passed with JDK 
Ubuntu-11.0.14.1+1-Ubuntu-0ubuntu1.20.04  |
   | +1 :green_heart: |  javadoc  |   1m 33s |  |  trunk passed with JDK 
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  spotbugs  |   3m 30s |  |  trunk passed  |
   | +1 :green_heart: |  shadedclient  |  22m 48s |  |  branch has no errors 
when building and testing our client artifacts.  |
   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   1m 14s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   1m 21s |  |  the patch passed with JDK 
Ubuntu-11.0.14.1+1-Ubuntu-0ubuntu1.20.04  |
   | +1 :green_heart: |  javac  |   1m 21s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   1m 15s |  |  the patch passed with JDK 
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  javac  |   1m 15s |  |  the patch passed  |
   | +1 :green_heart: |  blanks  |   0m  0s |  |  The patch has no blanks 
issues.  |
   | +1 :green_heart: |  checkstyle  |   0m 53s |  |  the patch passed  |
   | +1 :green_heart: |  mvnsite  |   1m 19s |  |  the patch passed  |
   | +1 :green_heart: |  javadoc  |   0m 51s |  |  the patch passed with JDK 
Ubuntu-11.0.14.1+1-Ubuntu-0ubuntu1.20.04  |
   | +1 :green_heart: |  javadoc  |   1m 27s |  |  the patch passed with JDK 
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  spotbugs  |   3m 14s |  |  the patch passed  |
   | +1 :green_heart: |  shadedclient  |  22m 28s |  |  patch has no errors 
when building and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | +1 :green_heart: |  unit  | 226m 14s |  |  hadoop-hdfs in the patch 
passed.  |
   | +1 :green_heart: |  asflicense  |   0m 49s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 332m 44s |  |  |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.41 ServerAPI=1.41 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4077/5/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/4077 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
mvnsite unit shadedclient spotbugs checkstyle codespell |
   | uname | Linux d25f1674353c 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 
11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
   | Build tool | maven |
   | Personality | dev-support/bin/hadoop.sh |
   | git revision | trunk / a243b760e8acd1d223ba0b9ae144dee4b1993e14 |
   | Default Java | Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
   | Multi-JDK versions | 
/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.14.1+1-Ubuntu-0ubuntu1.20.04 
/usr/lib/jvm/java-8-openjdk-amd64:Private 
Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4077/5/testReport/ |
   | Max. process+thread count | 3572 (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-4077/5/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.
   
   




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

    Worklog Id:     (was: 756246)
    Time Spent: 2h  (was: 1h 50m)

> Fix decommission UnsupportedOperationException: Remove unsupported
> ------------------------------------------------------------------
>
>                 Key: HDFS-16509
>                 URL: https://issues.apache.org/jira/browse/HDFS-16509
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 3.3.1, 3.3.2
>            Reporter: daimin
>            Assignee: daimin
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 2h
>  Remaining Estimate: 0h
>
> We encountered an "UnsupportedOperationException: Remove unsupported" error 
> when some datanodes were in decommission. The reason of the exception is that 
> datanode.getBlockIterator() returns anĀ Iterator does not support remove, 
> however DatanodeAdminDefaultMonitor#processBlocksInternal invokesĀ it.remove() 
> when a block not found, e.g, the file containing the block is deleted.



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