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Posted to common-issues@hadoop.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/06/15 11:32:00 UTC

[jira] [Work logged] (HADOOP-15124) Slow FileSystem.Statistics counters implementation

     [ https://issues.apache.org/jira/browse/HADOOP-15124?focusedWorklogId=781601&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-781601 ]

ASF GitHub Bot logged work on HADOOP-15124:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 15/Jun/22 11:31
            Start Date: 15/Jun/22 11:31
    Worklog Time Spent: 10m 
      Work Description: hadoop-yetus commented on PR #316:
URL: https://github.com/apache/hadoop/pull/316#issuecomment-1156356458

   :broken_heart: **-1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
   | +0 :ok: |  reexec  |   0m 48s |  |  Docker mode activated.  |
   |||| _ Prechecks _ |
   | +1 :green_heart: |  dupname  |   0m  0s |  |  No case conflicting files found.  |
   | +0 :ok: |  codespell  |   0m  1s |  |  codespell was not available.  |
   | +0 :ok: |  detsecrets  |   0m  1s |  |  detect-secrets 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 _ |
   | +0 :ok: |  mvndep  |  14m 48s |  |  Maven dependency ordering for branch  |
   | +1 :green_heart: |  mvninstall  |  28m  8s |  |  trunk passed  |
   | +1 :green_heart: |  compile  |  25m  7s |  |  trunk passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1  |
   | +1 :green_heart: |  compile  |  21m 39s |  |  trunk passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  checkstyle  |   4m 25s |  |  trunk passed  |
   | +1 :green_heart: |  mvnsite  |   3m 59s |  |  trunk passed  |
   | -1 :x: |  javadoc  |   1m 31s | [/branch-javadoc-hadoop-hdfs-project_hadoop-hdfs-jdkPrivateBuild-11.0.15+10-Ubuntu-0ubuntu0.20.04.1.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-316/4/artifact/out/branch-javadoc-hadoop-hdfs-project_hadoop-hdfs-jdkPrivateBuild-11.0.15+10-Ubuntu-0ubuntu0.20.04.1.txt) |  hadoop-hdfs in trunk failed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1.  |
   | +1 :green_heart: |  javadoc  |   3m  6s |  |  trunk passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  spotbugs  |   6m 58s |  |  trunk passed  |
   | +1 :green_heart: |  shadedclient  |  26m 36s |  |  branch has no errors when building and testing our client artifacts.  |
   | -0 :warning: |  patch  |  27m  3s |  |  Used diff version of patch file. Binary files and potentially other changes not applied. Please rebase and squash commits if necessary.  |
   |||| _ Patch Compile Tests _ |
   | +0 :ok: |  mvndep  |   0m 25s |  |  Maven dependency ordering for patch  |
   | +1 :green_heart: |  mvninstall  |   2m 27s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |  24m 17s |  |  the patch passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1  |
   | +1 :green_heart: |  javac  |  24m 17s |  |  root-jdkPrivateBuild-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 generated 0 new + 2887 unchanged - 3 fixed = 2887 total (was 2890)  |
   | +1 :green_heart: |  compile  |  21m 32s |  |  the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  javac  |  21m 32s |  |  root-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 0 new + 2682 unchanged - 3 fixed = 2682 total (was 2685)  |
   | +1 :green_heart: |  blanks  |   0m  0s |  |  The patch has no blanks issues.  |
   | +1 :green_heart: |  checkstyle  |   4m 19s |  |  the patch passed  |
   | +1 :green_heart: |  mvnsite  |   3m 52s |  |  the patch passed  |
   | -1 :x: |  javadoc  |   1m 31s | [/patch-javadoc-hadoop-hdfs-project_hadoop-hdfs-jdkPrivateBuild-11.0.15+10-Ubuntu-0ubuntu0.20.04.1.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-316/4/artifact/out/patch-javadoc-hadoop-hdfs-project_hadoop-hdfs-jdkPrivateBuild-11.0.15+10-Ubuntu-0ubuntu0.20.04.1.txt) |  hadoop-hdfs in the patch failed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1.  |
   | +1 :green_heart: |  javadoc  |   3m  8s |  |  the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  spotbugs  |   7m 13s |  |  the patch passed  |
   | +1 :green_heart: |  shadedclient  |  27m 30s |  |  patch has no errors when building and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | +1 :green_heart: |  unit  |  18m 10s |  |  hadoop-common in the patch passed.  |
   | -1 :x: |  unit  | 359m 49s | [/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-316/4/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt) |  hadoop-hdfs in the patch passed.  |
   | +1 :green_heart: |  asflicense  |   1m 33s |  |  The patch does not generate ASF License warnings.  |
   |  |   | 615m 23s |  |  |
   
   
   | Reason | Tests |
   |-------:|:------|
   | Failed junit tests | hadoop.hdfs.TestViewDistributedFileSystem |
   |   | hadoop.hdfs.server.mover.TestMover |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-316/4/artifact/out/Dockerfile |
   | GITHUB PR | https://github.com/apache/hadoop/pull/316 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
   | uname | Linux a74895ab4c38 4.15.0-175-generic #184-Ubuntu SMP Thu Mar 24 17:48:36 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux |
   | Build tool | maven |
   | Personality | dev-support/bin/hadoop.sh |
   | git revision | trunk / 4e61cb35d537ba60bb29a46a3487e84fe5231297 |
   | Default Java | Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
   | Multi-JDK versions | /usr/lib/jvm/java-11-openjdk-amd64:Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 /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-316/4/testReport/ |
   | Max. process+thread count | 2293 (vs. ulimit of 5500) |
   | modules | C: hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs U: . |
   | Console output | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-316/4/console |
   | versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
   | Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
   
   
   This message was automatically generated.
   
   




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

    Worklog Id:     (was: 781601)
    Time Spent: 50m  (was: 40m)

> Slow FileSystem.Statistics counters implementation
> --------------------------------------------------
>
>                 Key: HADOOP-15124
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15124
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: common
>    Affects Versions: 2.9.0, 2.8.3, 2.7.5, 3.0.0, 3.1.0
>            Reporter: Igor Dvorzhak
>            Assignee: Igor Dvorzhak
>            Priority: Major
>              Labels: common, filesystem, fs, pull-request-available, statistics
>         Attachments: HADOOP-15124-branch-3.2.001.patch, HADOOP-15124-branch-3.2.002.patch, HADOOP-15124.001.patch
>
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> While profiling 1TB TeraGen job on Hadoop 2.8.2 cluster (Google Dataproc, 2 workers, GCS connector) I saw that FileSystem.Statistics code paths Wall time is 5.58% and CPU time is 26.5% of total execution time.
> After switching FileSystem.Statistics implementation to LongAdder, consumed Wall time decreased to 0.006% and CPU time to 0.104% of total execution time.
> Total job runtime decreased from 66 mins to 61 mins.
> These results are not conclusive, because I didn't benchmark multiple times to average results, but regardless of performance gains switching to LongAdder simplifies code and reduces its complexity.



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