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https://issues.apache.org/jira/browse/HDFS-17818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18029224#comment-18029224
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ASF GitHub Bot commented on HDFS-17818:
---------------------------------------
hadoop-yetus commented on PR #7862:
URL: https://github.com/apache/hadoop/pull/7862#issuecomment-3393606300
:confetti_ball: **+1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 20s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 0s | | No case conflicting files
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| +1 :green_heart: | @author | 0m 0s | | The patch does not contain
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| +1 :green_heart: | test4tests | 0m 0s | | The patch appears to
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|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 32m 53s | | trunk passed |
| +1 :green_heart: | compile | 0m 46s | | trunk passed with JDK
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | compile | 0m 40s | | trunk passed with JDK
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| +1 :green_heart: | spotbugs | 1m 36s | | trunk passed |
| +1 :green_heart: | shadedclient | 21m 33s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 0m 34s | | the patch passed |
| +1 :green_heart: | compile | 0m 38s | | the patch passed with JDK
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javac | 0m 38s | | the patch passed |
| +1 :green_heart: | compile | 0m 35s | | the patch passed with JDK
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| +1 :green_heart: | javac | 0m 35s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| +1 :green_heart: | checkstyle | 0m 22s | | the patch passed |
| +1 :green_heart: | mvnsite | 0m 39s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 29s | | the patch passed with JDK
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javadoc | 1m 0s | | the patch passed with JDK
Private Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | spotbugs | 1m 36s | | the patch passed |
| +1 :green_heart: | shadedclient | 22m 7s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 193m 52s | | hadoop-hdfs in the patch
passed. |
| +1 :green_heart: | asflicense | 0m 30s | | The patch does not
generate ASF License warnings. |
| | | 282m 54s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.51 ServerAPI=1.51 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7862/8/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/7862 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets xmllint |
| uname | Linux 83f253028502 5.15.0-156-generic #166-Ubuntu SMP Sat Aug 9
00:02:46 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / d577987739a6c7a9144bec82bfc554b2e8dc77f4 |
| Default Java | Private Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09 |
| Multi-JDK versions |
/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
/usr/lib/jvm/java-8-openjdk-amd64:Private
Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7862/8/testReport/ |
| Max. process+thread count | 3607 (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-7862/8/console |
| versions | git=2.25.1 maven=3.9.11 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
This message was automatically generated.
> Fix serial fsimage transfer during checkpoint with multiple namenodes
> ---------------------------------------------------------------------
>
> Key: HDFS-17818
> URL: https://issues.apache.org/jira/browse/HDFS-17818
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 3.5.0
> Reporter: caozhiqiang
> Assignee: caozhiqiang
> Priority: Major
> Labels: pull-request-available
>
> In our cluster, each namespace has four NameNodes: one active, one standby,
> and two observers. When the standby NameNode performs a checkpoint, it
> transfer the fsimage to the other three NameNodes. However, we found that
> these transfer are performed serially.
> The reason is that the corePoolSize in ThreadPoolExecutor is 0, and the
> transfer task does not fill the LinkedBlockingQueue, resulting in only one
> thread transfer the fsimage at a time. This greatly increases the checkpoint
> time.
> {code:java}
> ExecutorService executor = new ThreadPoolExecutor(0,
> activeNNAddresses.size(), 100,
> TimeUnit.MILLISECONDS, new
> LinkedBlockingQueue<Runnable>(activeNNAddresses.size()),
> uploadThreadFactory); {code}
>
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