[ 
https://issues.apache.org/jira/browse/HDDS-2238?focusedWorklogId=323271&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-323271
 ]

ASF GitHub Bot logged work on HDDS-2238:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 04/Oct/19 08:17
            Start Date: 04/Oct/19 08:17
    Worklog Time Spent: 10m 
      Work Description: hadoop-yetus commented on issue #1590: HDDS-2238. 
Container Data Scrubber spams log in empty cluster
URL: https://github.com/apache/hadoop/pull/1590#issuecomment-538296550
 
 
   :broken_heart: **-1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime | Comment |
   |:----:|----------:|--------:|:--------|
   | 0 | reexec | 39 | Docker mode activated. |
   ||| _ Prechecks _ |
   | +1 | dupname | 0 | No case conflicting files found. |
   | +1 | @author | 0 | The patch does not contain any @author tags. |
   | +1 | test4tests | 0 | The patch appears to include 4 new or modified test 
files. |
   ||| _ trunk Compile Tests _ |
   | 0 | mvndep | 68 | Maven dependency ordering for branch |
   | -1 | mvninstall | 31 | hadoop-hdds in trunk failed. |
   | -1 | mvninstall | 33 | hadoop-ozone in trunk failed. |
   | -1 | compile | 21 | hadoop-hdds in trunk failed. |
   | -1 | compile | 16 | hadoop-ozone in trunk failed. |
   | +1 | checkstyle | 61 | trunk passed |
   | +1 | mvnsite | 0 | trunk passed |
   | +1 | shadedclient | 867 | branch has no errors when building and testing 
our client artifacts. |
   | -1 | javadoc | 23 | hadoop-hdds in trunk failed. |
   | -1 | javadoc | 20 | hadoop-ozone in trunk failed. |
   | 0 | spotbugs | 969 | Used deprecated FindBugs config; considering 
switching to SpotBugs. |
   | -1 | findbugs | 35 | hadoop-hdds in trunk failed. |
   | -1 | findbugs | 20 | hadoop-ozone in trunk failed. |
   ||| _ Patch Compile Tests _ |
   | 0 | mvndep | 29 | Maven dependency ordering for patch |
   | -1 | mvninstall | 35 | hadoop-hdds in the patch failed. |
   | -1 | mvninstall | 37 | hadoop-ozone in the patch failed. |
   | -1 | compile | 25 | hadoop-hdds in the patch failed. |
   | -1 | compile | 19 | hadoop-ozone in the patch failed. |
   | -1 | javac | 25 | hadoop-hdds in the patch failed. |
   | -1 | javac | 19 | hadoop-ozone in the patch failed. |
   | -0 | checkstyle | 28 | hadoop-hdds: The patch generated 6 new + 0 
unchanged - 0 fixed = 6 total (was 0) |
   | -0 | checkstyle | 30 | hadoop-ozone: The patch generated 1 new + 0 
unchanged - 0 fixed = 1 total (was 0) |
   | +1 | mvnsite | 0 | the patch passed |
   | +1 | whitespace | 0 | The patch has no whitespace issues. |
   | +1 | shadedclient | 709 | patch has no errors when building and testing 
our client artifacts. |
   | -1 | javadoc | 22 | hadoop-hdds in the patch failed. |
   | -1 | javadoc | 21 | hadoop-ozone in the patch failed. |
   | -1 | findbugs | 31 | hadoop-hdds in the patch failed. |
   | -1 | findbugs | 21 | hadoop-ozone in the patch failed. |
   ||| _ Other Tests _ |
   | -1 | unit | 27 | hadoop-hdds in the patch failed. |
   | -1 | unit | 26 | hadoop-ozone in the patch failed. |
   | +1 | asflicense | 33 | The patch does not generate ASF License warnings. |
   | | | 2459 | |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | Client=19.03.1 Server=19.03.1 base: 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/1590 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
mvnsite unit shadedclient findbugs checkstyle |
   | uname | Linux f2e75c4de5e8 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 | personality/hadoop.sh |
   | git revision | trunk / ec8f691 |
   | Default Java | 1.8.0_222 |
   | mvninstall | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/branch-mvninstall-hadoop-hdds.txt
 |
   | mvninstall | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/branch-mvninstall-hadoop-ozone.txt
 |
   | compile | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/branch-compile-hadoop-hdds.txt
 |
   | compile | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/branch-compile-hadoop-ozone.txt
 |
   | javadoc | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/branch-javadoc-hadoop-hdds.txt
 |
   | javadoc | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/branch-javadoc-hadoop-ozone.txt
 |
   | findbugs | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/branch-findbugs-hadoop-hdds.txt
 |
   | findbugs | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/branch-findbugs-hadoop-ozone.txt
 |
   | mvninstall | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/patch-mvninstall-hadoop-hdds.txt
 |
   | mvninstall | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/patch-mvninstall-hadoop-ozone.txt
 |
   | compile | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/patch-compile-hadoop-hdds.txt
 |
   | compile | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/patch-compile-hadoop-ozone.txt
 |
   | javac | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/patch-compile-hadoop-hdds.txt
 |
   | javac | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/patch-compile-hadoop-ozone.txt
 |
   | checkstyle | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/diff-checkstyle-hadoop-hdds.txt
 |
   | checkstyle | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/diff-checkstyle-hadoop-ozone.txt
 |
   | javadoc | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/patch-javadoc-hadoop-hdds.txt
 |
   | javadoc | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/patch-javadoc-hadoop-ozone.txt
 |
   | findbugs | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/patch-findbugs-hadoop-hdds.txt
 |
   | findbugs | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/patch-findbugs-hadoop-ozone.txt
 |
   | unit | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/patch-unit-hadoop-hdds.txt
 |
   | unit | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/artifact/out/patch-unit-hadoop-ozone.txt
 |
   |  Test Results | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/testReport/ |
   | Max. process+thread count | 446 (vs. ulimit of 5500) |
   | modules | C: hadoop-hdds/container-service hadoop-ozone/integration-test 
U: . |
   | Console output | 
https://builds.apache.org/job/hadoop-multibranch/job/PR-1590/1/console |
   | versions | git=2.7.4 maven=3.3.9 |
   | Powered by | Apache Yetus 0.10.0 http://yetus.apache.org |
   
   
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 323271)
    Time Spent: 0.5h  (was: 20m)

> Container Data Scrubber spams log in empty cluster
> --------------------------------------------------
>
>                 Key: HDDS-2238
>                 URL: https://issues.apache.org/jira/browse/HDDS-2238
>             Project: Hadoop Distributed Data Store
>          Issue Type: Sub-task
>          Components: Ozone Datanode
>    Affects Versions: 0.5.0
>            Reporter: Attila Doroszlai
>            Assignee: Attila Doroszlai
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> In an empty cluster (without closed containers) logs are filled with messages 
> from completed data scrubber iterations (~3600 per second for me), if 
> Container Scanner is enabled ({{hdds.containerscrub.enabled=true}}), eg.:
> {noformat}
> datanode_1  | 2019-10-03 15:43:57 INFO  ContainerDataScanner:114 - Completed 
> an iteration of container data scrubber in 0 minutes. Number of  iterations 
> (since the data-node restart) : 6763, Number of containers scanned in this 
> iteration : 0, Number of unhealthy containers found in this iteration : 0
> {noformat} 
> Also CPU usage is quite high.
> I think:
> # there should be a small sleep between iterations
> # it should log only if any containers were scanned



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