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Posted to hdfs-issues@hadoop.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/06/03 12:23:00 UTC
[jira] [Work logged] (HDFS-16613) EC: Improve performance of decommissioning dn with many ec blocks
[ https://issues.apache.org/jira/browse/HDFS-16613?focusedWorklogId=778059&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-778059 ]
ASF GitHub Bot logged work on HDFS-16613:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 03/Jun/22 12:22
Start Date: 03/Jun/22 12:22
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on PR #4391:
URL: https://github.com/apache/hadoop/pull/4391#issuecomment-1145908659
:confetti_ball: **+1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 40s | | 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. |
| +0 :ok: | xmllint | 0m 1s | | xmllint 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 _ |
| +1 :green_heart: | mvninstall | 39m 0s | | trunk passed |
| +1 :green_heart: | compile | 1m 30s | | trunk passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 |
| +1 :green_heart: | compile | 1m 26s | | trunk passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | checkstyle | 1m 7s | | trunk passed |
| +1 :green_heart: | mvnsite | 1m 26s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 13s | | trunk passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 |
| +1 :green_heart: | javadoc | 1m 27s | | trunk passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 3m 26s | | trunk passed |
| +1 :green_heart: | shadedclient | 24m 57s | | branch has no errors when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 1m 23s | | the patch passed |
| +1 :green_heart: | compile | 1m 30s | | the patch passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 |
| +1 :green_heart: | javac | 1m 30s | | the patch passed |
| +1 :green_heart: | compile | 1m 19s | | the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | javac | 1m 19s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks issues. |
| +1 :green_heart: | checkstyle | 1m 5s | | the patch passed |
| +1 :green_heart: | mvnsite | 1m 29s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 56s | | the patch passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 |
| +1 :green_heart: | javadoc | 1m 29s | | the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 3m 44s | | the patch passed |
| +1 :green_heart: | shadedclient | 25m 40s | | patch has no errors when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 265m 16s | | hadoop-hdfs in the patch passed. |
| +1 :green_heart: | asflicense | 0m 49s | | The patch does not generate ASF License warnings. |
| | | 378m 0s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4391/5/artifact/out/Dockerfile |
| GITHUB PR | https://github.com/apache/hadoop/pull/4391 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets xmllint |
| uname | Linux 31308dc681d3 4.15.0-169-generic #177-Ubuntu SMP Thu Feb 3 10:50:38 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / baa5a8530599fe344ba10aca71d3450f0d236459 |
| 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-4391/5/testReport/ |
| Max. process+thread count | 4037 (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-4391/5/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: 778059)
Remaining Estimate: 0h
Time Spent: 10m
> EC: Improve performance of decommissioning dn with many ec blocks
> -----------------------------------------------------------------
>
> Key: HDFS-16613
> URL: https://issues.apache.org/jira/browse/HDFS-16613
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: ec, erasure-coding, namenode
> Affects Versions: 3.4.0
> Reporter: caozhiqiang
> Assignee: caozhiqiang
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> In a hdfs cluster with a lot of EC blocks, decommission a dn is very slow. The reason is unlike replication blocks can be replicated from any dn which has the same block replication, the ec block have to be replicated from the decommissioning dn.
> The configurations dfs.namenode.replication.max-streams and dfs.namenode.replication.max-streams-hard-limit will limit the replication speed, but increase these configurations will create risk to the whole cluster's network. So it should add a new configuration to limit the decommissioning dn, distinguished from the cluster wide max-streams limit.
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