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https://issues.apache.org/jira/browse/HDFS-17777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18064471#comment-18064471
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ASF GitHub Bot commented on HDFS-17777:
---------------------------------------
hadoop-yetus commented on PR #8325:
URL: https://github.com/apache/hadoop/pull/8325#issuecomment-4031442856
:confetti_ball: **+1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 34s | | 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 1 new or modified test files. |
|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 42m 50s | | trunk passed |
| +1 :green_heart: | compile | 1m 44s | | trunk passed with JDK
Ubuntu-21.0.10+7-Ubuntu-124.04 |
| +1 :green_heart: | compile | 1m 42s | | trunk passed with JDK
Ubuntu-17.0.18+8-Ubuntu-124.04.1 |
| +1 :green_heart: | checkstyle | 1m 45s | | trunk passed |
| +1 :green_heart: | mvnsite | 1m 51s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 29s | | trunk passed with JDK
Ubuntu-21.0.10+7-Ubuntu-124.04 |
| +1 :green_heart: | javadoc | 1m 26s | | trunk passed with JDK
Ubuntu-17.0.18+8-Ubuntu-124.04.1 |
| +1 :green_heart: | spotbugs | 4m 3s | | trunk passed |
| +1 :green_heart: | shadedclient | 31m 46s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 1m 22s | | the patch passed |
| +1 :green_heart: | compile | 1m 16s | | the patch passed with JDK
Ubuntu-21.0.10+7-Ubuntu-124.04 |
| +1 :green_heart: | javac | 1m 16s | | the patch passed |
| +1 :green_heart: | compile | 1m 14s | | the patch passed with JDK
Ubuntu-17.0.18+8-Ubuntu-124.04.1 |
| +1 :green_heart: | javac | 1m 14s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| +1 :green_heart: | checkstyle | 1m 14s | | the patch passed |
| +1 :green_heart: | mvnsite | 1m 24s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 59s | | the patch passed with JDK
Ubuntu-21.0.10+7-Ubuntu-124.04 |
| +1 :green_heart: | javadoc | 1m 0s | | the patch passed with JDK
Ubuntu-17.0.18+8-Ubuntu-124.04.1 |
| +1 :green_heart: | spotbugs | 3m 47s | | the patch passed |
| +1 :green_heart: | shadedclient | 31m 37s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 217m 3s | | hadoop-hdfs in the patch
passed. |
| +1 :green_heart: | asflicense | 0m 46s | | The patch does not
generate ASF License warnings. |
| | | 349m 12s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.54 ServerAPI=1.54 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8325/1/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/8325 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
| uname | Linux 4d845e87b2c1 5.15.0-164-generic #174-Ubuntu SMP Fri Nov 14
20:25:16 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / 74c59a27378a3e79f4d9ba9c402f5755225e2830 |
| Default Java | Ubuntu-17.0.18+8-Ubuntu-124.04.1 |
| Multi-JDK versions |
/usr/lib/jvm/java-21-openjdk-amd64:Ubuntu-21.0.10+7-Ubuntu-124.04
/usr/lib/jvm/java-17-openjdk-amd64:Ubuntu-17.0.18+8-Ubuntu-124.04.1 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8325/1/testReport/ |
| Max. process+thread count | 3472 (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-8325/1/console |
| versions | git=2.43.0 maven=3.9.11 spotbugs=4.9.7 |
| Powered by | Apache Yetus 0.14.1 https://yetus.apache.org |
This message was automatically generated.
> Improve ExcessRedundancyMap locking semantics
> ---------------------------------------------
>
> Key: HDFS-17777
> URL: https://issues.apache.org/jira/browse/HDFS-17777
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 3.4.0, 3.3.6, 3.4.1
> Reporter: William Montaz
> Priority: Major
> Labels: pull-request-available
> Attachments: Capture d’écran 2025-04-30 à 14.32.41.png
>
>
> ExcessRedundancyMap introduce in HDFS-9838 uses synchronized keyword for
> threadsafety. However prior to introduce this class, the operations such as
> contains were made without a new lock, they were called inside BlockManager
> with verification that the fsNamesystem lock was held in read or write mode
> depending on the situation.
>
> ExcessRedundancyMap now forces all thread to grab the same exclusive lock,
> even if in general a lot more read are performed on the class.
>
> By using a ReentrantReadWriteLock for ExcessRedundancyMap we could improve
> throughput of the namenode. Another approach could be to introduce the same
> asserts on namesystem lock as it seems those methods are always called in the
> context of the FSNamesystem lock.
>
>
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