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https://issues.apache.org/jira/browse/HDFS-17036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17728814#comment-17728814
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ASF GitHub Bot commented on HDFS-17036:
---------------------------------------
hadoop-yetus commented on PR #5710:
URL: https://github.com/apache/hadoop/pull/5710#issuecomment-1573986018
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 37s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 0s | | No case conflicting files
found. |
| +0 :ok: | codespell | 0m 0s | | codespell was not available. |
| +0 :ok: | detsecrets | 0m 0s | | 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 1 new or modified test files. |
|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 36m 15s | | trunk passed |
| +1 :green_heart: | compile | 1m 22s | | trunk passed with JDK
Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1 |
| +1 :green_heart: | compile | 1m 11s | | trunk passed with JDK
Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | checkstyle | 1m 5s | | trunk passed |
| +1 :green_heart: | mvnsite | 1m 18s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 8s | | trunk passed with JDK
Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1 |
| +1 :green_heart: | javadoc | 1m 29s | | trunk passed with JDK
Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | spotbugs | 3m 12s | | trunk passed |
| +1 :green_heart: | shadedclient | 22m 44s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 1m 5s | | the patch passed |
| +1 :green_heart: | compile | 1m 10s | | the patch passed with JDK
Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1 |
| +1 :green_heart: | javac | 1m 10s | | the patch passed |
| +1 :green_heart: | compile | 1m 2s | | the patch passed with JDK
Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | javac | 1m 2s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| +1 :green_heart: | checkstyle | 0m 51s | | the patch passed |
| +1 :green_heart: | mvnsite | 1m 8s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 51s | | the patch passed with JDK
Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1 |
| +1 :green_heart: | javadoc | 1m 25s | | the patch passed with JDK
Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | spotbugs | 3m 3s | | the patch passed |
| +1 :green_heart: | shadedclient | 22m 40s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| -1 :x: | unit | 206m 7s |
[/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5710/1/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt)
| hadoop-hdfs in the patch passed. |
| +1 :green_heart: | asflicense | 0m 49s | | The patch does not
generate ASF License warnings. |
| | | 310m 20s | | |
| Reason | Tests |
|-------:|:------|
| Failed junit tests | hadoop.hdfs.server.datanode.TestDirectoryScanner |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.43 ServerAPI=1.43 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5710/1/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/5710 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
| uname | Linux 1fb05e284442 4.15.0-206-generic #217-Ubuntu SMP Fri Feb 3
19:10:13 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / 7879aaeb23731672cc415005e4fb52efd711b9d0 |
| Default Java | Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
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/usr/lib/jvm/java-8-openjdk-amd64:Private
Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5710/1/testReport/ |
| Max. process+thread count | 3321 (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-5710/1/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.
> Limit pendingReconstruction size
> --------------------------------
>
> Key: HDFS-17036
> URL: https://issues.apache.org/jira/browse/HDFS-17036
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Affects Versions: 3.4.0
> Reporter: liuguanghua
> Assignee: liuguanghua
> Priority: Major
> Labels: pull-request-available
>
> Consider the following scenario：
> (1) The hdfs cluster is big enough.
> Namenode Config：
> DFS_NAMENODE_REPLICATION_WORK_MULTIPLIER_PER_ITERATION ->200
> DFS_NAMENODE_REPLICATION_MAX_STREAMS_KEY->100
> DFS_NAMENODE_REPLICATION_STREAMS_HARD_LIMIT_KEY->200
> Datanode ：
> It has large disk on one datanode. One datanode has millions or even tens of
> millions blocks. Or maybe more in archive cluster.
> (2) The cluster administrator may do one of the following actions：
> 2.1 Increase replication on one large dir ,eg 2PB
> 2.2 Decommissioning some nodes from cluster
> (3) When the cluster datanode is on heavy read and write.
>
> Thus, datanode receive transfer commands form heartbeat whit namenode. When
> datanode is on heavily load （write and read）, the
> SumOfActorCommandQueueLength metris will increase to 1k+ because of slow
> consumption with lock competition. See details code ：
> BPServiceActor.CommandProcessingThread
>
> And Namenode distribute all replicationWork to datanode through heartbeat.
> All LowerReconstruction blocks will in neededReconstruction. Every heartbeat
> will distribute
> liveDatnaodes*DFS_NAMENODE_REPLICATION_WORK_MULTIPLIER_PER_ITERATION to the
> related datanodes. But as mentioned above，the datanode blocked executing the
> transfer block commands. When 5min later by default , the
> pendingReconstruction will into timeout and then re-entry
> neededReconstruction, and then re-entry pendingReconstruction . So the
> datanodes will receive multiple transfer command with same block. That will
> lead to excess blocks.
> Continuous cycle，it will lead to serious consequences. Datanode has more
> tranfers commands in queue and waste more disk space and result in more
> excess blocks.
>
> So, I think we should limit the max size of pendingReconstruction.
>
>
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