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https://issues.apache.org/jira/browse/HADOOP-19695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18028004#comment-18028004
 ] 

ASF GitHub Bot commented on HADOOP-19695:
-----------------------------------------

hadoop-yetus commented on PR #7979:
URL: https://github.com/apache/hadoop/pull/7979#issuecomment-3375718964

   :broken_heart: **-1 overall**
   
   
   
   
   
   
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|
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   |||| _ trunk Compile Tests _ |
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   | -1 :x: |  mvninstall  |  45m 43s | 
[/branch-mvninstall-root.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7979/9/artifact/out/branch-mvninstall-root.txt)
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[/branch-compile-root-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7979/9/artifact/out/branch-compile-root-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt)
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[/branch-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-7979/9/artifact/out/branch-compile-root-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt)
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   |||| _ Patch Compile Tests _ |
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[/patch-compile-root-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7979/9/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  |  11m 28s | 
[/patch-compile-root-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7979/9/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  |  10m  9s | 
[/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-7979/9/artifact/out/patch-compile-root-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt)
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Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.  |
   | -1 :x: |  javac  |  10m  9s | 
[/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-7979/9/artifact/out/patch-compile-root-jdkPrivateBuild-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.txt)
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Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09.  |
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   | +1 :green_heart: |  mvnsite  |   2m 42s |  |  the patch passed  |
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Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04  |
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Private Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09  |
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   |||| _ Other Tests _ |
   | +1 :green_heart: |  unit  |  22m 22s |  |  hadoop-common in the patch 
passed.  |
   | +1 :green_heart: |  unit  | 470m 28s |  |  hadoop-hdfs in the patch 
passed.  |
   | +1 :green_heart: |  asflicense  |   0m 57s |  |  The patch does not 
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   |  |   | 741m 16s |  |  |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.51 ServerAPI=1.51 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7979/9/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/7979 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
   | uname | Linux 83d811e5f434 5.15.0-144-generic #157-Ubuntu SMP Mon Jun 16 
07:33:10 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux |
   | Build tool | maven |
   | Personality | dev-support/bin/hadoop.sh |
   | git revision | trunk / 8e2cd7f590381ff77458ec6a44f0d3b83779eb53 |
   | 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-7979/9/testReport/ |
   | Max. process+thread count | 2216 (vs. ulimit of 5500) |
   | modules | C: hadoop-common-project/hadoop-common 
hadoop-hdfs-project/hadoop-hdfs U: . |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7979/9/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.
   
   




> Add dual-stack/IPv6 Support to HttpServer2
> ------------------------------------------
>
>                 Key: HADOOP-19695
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19695
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: hadoop-common
>            Reporter: Ferenc Erdelyi
>            Assignee: Ferenc Erdelyi
>            Priority: Minor
>              Labels: pull-request-available
>
> To support clients connecting to JHS via IPv6, we need to equip the YARN 
> WebApp class to bind to an IPv6 address. WebApp uses the HttpServer2, and 
> adding the IPv6 connector to this class makes the solution more elegant.
> To enable dual-stack or IPv6 support, use InetAddress.getAllByName(hostname) 
> to resolve the IP addresses of a host.
> When the system property java.net.preferIPv4Stack is set to true, only IPv4 
> addresses are returned, and any IPv6 addresses are ignored, so no extra check 
> is needed to exclude IPv6.
> When java.net.preferIPv4Stack is false, both IPv4 and IPv6 addresses may be 
> returned, and any IPv6 addresses will also be added as connectors.
> To disable IPv4, you need to configure the OS at the system level.
>  



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