[ 
https://issues.apache.org/jira/browse/HDFS-16521?focusedWorklogId=748300&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-748300
 ]

ASF GitHub Bot logged work on HDFS-16521:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 27/Mar/22 05:08
            Start Date: 27/Mar/22 05:08
    Worklog Time Spent: 10m 
      Work Description: hadoop-yetus commented on pull request #4107:
URL: https://github.com/apache/hadoop/pull/4107#issuecomment-1079841252


   :broken_heart: **-1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
   | +0 :ok: |  reexec  |   1m 25s |  |  Docker mode activated.  |
   |||| _ Prechecks _ |
   | +1 :green_heart: |  dupname  |   0m  1s |  |  No case conflicting files 
found.  |
   | +0 :ok: |  codespell  |   0m  0s |  |  codespell was not available.  |
   | +0 :ok: |  buf  |   0m  0s |  |  buf 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 3 new or modified test files.  |
   |||| _ trunk Compile Tests _ |
   | +0 :ok: |  mvndep  |  12m 52s |  |  Maven dependency ordering for branch  |
   | +1 :green_heart: |  mvninstall  |  25m  9s |  |  trunk passed  |
   | +1 :green_heart: |  compile  |   6m 26s |  |  trunk passed with JDK 
Ubuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04  |
   | +1 :green_heart: |  compile  |   6m  6s |  |  trunk passed with JDK 
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  checkstyle  |   1m 15s |  |  trunk passed  |
   | +1 :green_heart: |  mvnsite  |   3m 21s |  |  trunk passed  |
   | +1 :green_heart: |  javadoc  |   2m 34s |  |  trunk passed with JDK 
Ubuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04  |
   | +1 :green_heart: |  javadoc  |   3m 18s |  |  trunk passed with JDK 
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  spotbugs  |   7m 32s |  |  trunk passed  |
   | +1 :green_heart: |  shadedclient  |  23m 13s |  |  branch has no errors 
when building and testing our client artifacts.  |
   |||| _ Patch Compile Tests _ |
   | +0 :ok: |  mvndep  |   0m 28s |  |  Maven dependency ordering for patch  |
   | +1 :green_heart: |  mvninstall  |   2m 55s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   6m  8s |  |  the patch passed with JDK 
Ubuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04  |
   | +1 :green_heart: |  cc  |   6m  8s |  |  the patch passed  |
   | -1 :x: |  javac  |   6m  8s | 
[/results-compile-javac-hadoop-hdfs-project-jdkUbuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4107/3/artifact/out/results-compile-javac-hadoop-hdfs-project-jdkUbuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04.txt)
 |  hadoop-hdfs-project-jdkUbuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04 with JDK 
Ubuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04 generated 1 new + 651 unchanged - 0 
fixed = 652 total (was 651)  |
   | +1 :green_heart: |  compile  |   5m 47s |  |  the patch passed with JDK 
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  cc  |   5m 47s |  |  the patch passed  |
   | -1 :x: |  javac  |   5m 47s | 
[/results-compile-javac-hadoop-hdfs-project-jdkPrivateBuild-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4107/3/artifact/out/results-compile-javac-hadoop-hdfs-project-jdkPrivateBuild-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07.txt)
 |  hadoop-hdfs-project-jdkPrivateBuild-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 
with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 generated 1 new + 
629 unchanged - 0 fixed = 630 total (was 629)  |
   | +1 :green_heart: |  blanks  |   0m  1s |  |  The patch has no blanks 
issues.  |
   | +1 :green_heart: |  checkstyle  |   1m  9s |  |  hadoop-hdfs-project: The 
patch generated 0 new + 456 unchanged - 1 fixed = 456 total (was 457)  |
   | +1 :green_heart: |  mvnsite  |   2m 57s |  |  the patch passed  |
   | +1 :green_heart: |  javadoc  |   2m 13s |  |  the patch passed with JDK 
Ubuntu-11.0.14+9-Ubuntu-0ubuntu2.20.04  |
   | +1 :green_heart: |  javadoc  |   3m  1s |  |  the patch passed with JDK 
Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  spotbugs  |   7m 37s |  |  the patch passed  |
   | +1 :green_heart: |  shadedclient  |  22m 41s |  |  patch has no errors 
when building and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | +1 :green_heart: |  unit  |   2m 26s |  |  hadoop-hdfs-client in the patch 
passed.  |
   | -1 :x: |  unit  | 500m 40s | 
[/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4107/3/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt)
 |  hadoop-hdfs in the patch passed.  |
   | -1 :x: |  unit  |   1m 10s | 
[/patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4107/3/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt)
 |  hadoop-hdfs-rbf in the patch failed.  |
   | +1 :green_heart: |  asflicense  |   0m 41s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 655m 10s |  |  |
   
   
   | Reason | Tests |
   |-------:|:------|
   | Failed junit tests | hadoop.hdfs.server.mover.TestMover |
   |   | hadoop.hdfs.server.namenode.ha.TestSeveralNameNodes |
   |   | hadoop.hdfs.server.namenode.ha.TestEditLogTailer |
   |   | hadoop.hdfs.server.diskbalancer.command.TestDiskBalancerCommand |
   |   | hadoop.hdfs.server.namenode.TestNNThroughputBenchmark |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.41 ServerAPI=1.41 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4107/3/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/4107 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
mvnsite unit shadedclient spotbugs checkstyle codespell cc buflint bufcompat |
   | uname | Linux a13764cb594c 4.15.0-65-generic #74-Ubuntu SMP Tue Sep 17 
17:06:04 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
   | Build tool | maven |
   | Personality | dev-support/bin/hadoop.sh |
   | git revision | trunk / e5945c0a5c2e1335b590e01923f548fba946bc37 |
   | 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+9-Ubuntu-0ubuntu2.20.04 
/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-4107/3/testReport/ |
   | Max. process+thread count | 2740 (vs. ulimit of 5500) |
   | modules | C: hadoop-hdfs-project/hadoop-hdfs-client 
hadoop-hdfs-project/hadoop-hdfs hadoop-hdfs-project/hadoop-hdfs-rbf U: 
hadoop-hdfs-project |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4107/3/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: 748300)
    Time Spent: 50m  (was: 40m)

> DFS API to retrieve slow datanodes
> ----------------------------------
>
>                 Key: HDFS-16521
>                 URL: https://issues.apache.org/jira/browse/HDFS-16521
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: Viraj Jasani
>            Assignee: Viraj Jasani
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> In order to build some automation around slow datanodes that regularly show 
> up in the slow peer tracking report, e.g. decommission such nodes and queue 
> them up for external processing and add them back later to the cluster after 
> fixing issues etc, we should expose DFS API to retrieve all slow nodes at a 
> given time.
> Providing such API would also help add an additional option to "dfsadmin 
> -report" that lists slow datanodes info for operators to take a look, 
> specifically useful filter for larger clusters.



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