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https://issues.apache.org/jira/browse/HADOOP-18296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18007791#comment-18007791
]
ASF GitHub Bot commented on HADOOP-18296:
-----------------------------------------
hadoop-yetus commented on PR #7732:
URL: https://github.com/apache/hadoop/pull/7732#issuecomment-3083717699
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
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| +0 :ok: | reexec | 0m 37s | | Docker mode activated. |
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| +1 :green_heart: | dupname | 0m 0s | | No case conflicting files
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| +0 :ok: | codespell | 0m 1s | | codespell was not available. |
| +0 :ok: | detsecrets | 0m 1s | | detect-secrets was not available.
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| +0 :ok: | xmllint | 0m 1s | | xmllint was not available. |
| +0 :ok: | markdownlint | 0m 1s | | markdownlint was not available.
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| +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 5 new or modified test files. |
|||| _ branch-3.4 Compile Tests _ |
| +0 :ok: | mvndep | 8m 36s | | Maven dependency ordering for branch |
| -1 :x: | mvninstall | 4m 18s |
[/branch-mvninstall-root.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/branch-mvninstall-root.txt)
| root in branch-3.4 failed. |
| +1 :green_heart: | compile | 36m 8s | | branch-3.4 passed with JDK
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | compile | 17m 5s | | branch-3.4 passed with JDK
Private Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09 |
| -0 :warning: | checkstyle | 1m 23s |
[/buildtool-branch-checkstyle-root.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/buildtool-branch-checkstyle-root.txt)
| The patch fails to run checkstyle in root |
| -1 :x: | mvnsite | 0m 42s |
[/branch-mvnsite-hadoop-tools_hadoop-aws.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/branch-mvnsite-hadoop-tools_hadoop-aws.txt)
| hadoop-aws in branch-3.4 failed. |
| -1 :x: | javadoc | 0m 32s |
[/branch-javadoc-hadoop-tools_hadoop-aws-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/branch-javadoc-hadoop-tools_hadoop-aws-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt)
| hadoop-aws in branch-3.4 failed with JDK
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04. |
| -1 :x: | javadoc | 0m 33s |
[/branch-javadoc-hadoop-tools_hadoop-aws-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/branch-javadoc-hadoop-tools_hadoop-aws-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt)
| hadoop-aws in branch-3.4 failed with JDK Private
Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09. |
| -1 :x: | spotbugs | 0m 33s |
[/branch-spotbugs-hadoop-tools_hadoop-aws.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/branch-spotbugs-hadoop-tools_hadoop-aws.txt)
| hadoop-aws in branch-3.4 failed. |
| +1 :green_heart: | shadedclient | 35m 6s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +0 :ok: | mvndep | 0m 17s | | Maven dependency ordering for patch |
| -1 :x: | mvninstall | 0m 25s |
[/patch-mvninstall-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-mvninstall-hadoop-common-project_hadoop-common.txt)
| hadoop-common in the patch failed. |
| -1 :x: | mvninstall | 0m 12s |
[/patch-mvninstall-hadoop-tools_hadoop-aws.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-mvninstall-hadoop-tools_hadoop-aws.txt)
| hadoop-aws in the patch failed. |
| -1 :x: | compile | 0m 39s |
[/patch-compile-root-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-compile-root-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt)
| root in the patch failed with JDK
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04. |
| -1 :x: | javac | 0m 39s |
[/patch-compile-root-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-compile-root-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt)
| root in the patch failed with JDK
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04. |
| -1 :x: | compile | 0m 39s |
[/patch-compile-root-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-compile-root-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt)
| root in the patch failed with JDK Private
Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09. |
| -1 :x: | javac | 0m 39s |
[/patch-compile-root-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-compile-root-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt)
| root in the patch failed with JDK Private
Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09. |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| -0 :warning: | checkstyle | 1m 4s |
[/buildtool-patch-checkstyle-root.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/buildtool-patch-checkstyle-root.txt)
| The patch fails to run checkstyle in root |
| -1 :x: | mvnsite | 0m 27s |
[/patch-mvnsite-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-mvnsite-hadoop-common-project_hadoop-common.txt)
| hadoop-common in the patch failed. |
| -1 :x: | mvnsite | 0m 11s |
[/patch-mvnsite-hadoop-tools_hadoop-aws.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-mvnsite-hadoop-tools_hadoop-aws.txt)
| hadoop-aws in the patch failed. |
| -1 :x: | javadoc | 0m 25s |
[/patch-javadoc-hadoop-common-project_hadoop-common-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-javadoc-hadoop-common-project_hadoop-common-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt)
| hadoop-common in the patch failed with JDK
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| -1 :x: | javadoc | 0m 12s |
[/patch-javadoc-hadoop-tools_hadoop-aws-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-javadoc-hadoop-tools_hadoop-aws-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt)
| hadoop-aws in the patch failed with JDK
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| -1 :x: | javadoc | 0m 24s |
[/patch-javadoc-hadoop-common-project_hadoop-common-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-javadoc-hadoop-common-project_hadoop-common-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt)
| hadoop-common in the patch failed with JDK Private
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| -1 :x: | javadoc | 0m 13s |
[/patch-javadoc-hadoop-tools_hadoop-aws-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-javadoc-hadoop-tools_hadoop-aws-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt)
| hadoop-aws in the patch failed with JDK Private
Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09. |
| -1 :x: | spotbugs | 0m 25s |
[/patch-spotbugs-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-spotbugs-hadoop-common-project_hadoop-common.txt)
| hadoop-common in the patch failed. |
| -1 :x: | spotbugs | 0m 12s |
[/patch-spotbugs-hadoop-tools_hadoop-aws.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-spotbugs-hadoop-tools_hadoop-aws.txt)
| hadoop-aws in the patch failed. |
| -1 :x: | shadedclient | 7m 4s | | patch has errors when building
and testing our client artifacts. |
|||| _ Other Tests _ |
| -1 :x: | unit | 0m 24s |
[/patch-unit-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-unit-hadoop-common-project_hadoop-common.txt)
| hadoop-common in the patch failed. |
| -1 :x: | unit | 0m 12s |
[/patch-unit-hadoop-tools_hadoop-aws.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/patch-unit-hadoop-tools_hadoop-aws.txt)
| hadoop-aws in the patch failed. |
| +1 :green_heart: | asflicense | 0m 29s | | The patch does not
generate ASF License warnings. |
| | | 121m 24s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.51 ServerAPI=1.51 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/7732 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets xmllint
markdownlint |
| uname | Linux 264ac290045a 5.15.0-143-generic #153-Ubuntu SMP Fri Jun 13
19:10:45 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | branch-3.4 / 6daf71bd02de8d916141f483d2e5145965f5b94a |
| 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-7732/8/testReport/ |
| Max. process+thread count | 552 (vs. ulimit of 5500) |
| modules | C: hadoop-common-project/hadoop-common hadoop-tools/hadoop-aws
U: . |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7732/8/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.
> Memory fragmentation in ChecksumFileSystem Vectored IO implementation.
> ----------------------------------------------------------------------
>
> Key: HADOOP-18296
> URL: https://issues.apache.org/jira/browse/HADOOP-18296
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: common
> Affects Versions: 3.4.0
> Reporter: Mukund Thakur
> Assignee: Steve Loughran
> Priority: Minor
> Labels: fs, pull-request-available
>
> As we have implemented merging of ranges in the ChecksumFSInputChecker
> implementation of vectored IO api, it can lead to memory fragmentation. Let
> me explain by example.
>
> Suppose client requests for 3 ranges.
> 0-500, 700-1000 and 1200-1500.
> Now because of merging, all the above ranges will get merged into one and we
> will allocate a big byte buffer of 0-1500 size but return sliced byte buffers
> for the desired ranges.
> Now once the client is done reading all the ranges, it will only be able to
> free the memory for requested ranges and memory of the gaps will never be
> released for eg here (500-700 and 1000-1200).
>
> Note this only happens for direct byte buffers.
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