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https://issues.apache.org/jira/browse/HDFS-17807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18007984#comment-18007984
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ASF GitHub Bot commented on HDFS-17807:
---------------------------------------
hadoop-yetus commented on PR #7808:
URL: https://github.com/apache/hadoop/pull/7808#issuecomment-3086963870
:confetti_ball: **+1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 51s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 0s | | No case conflicting files
found. |
| +0 :ok: | codespell | 0m 0s | | codespell was not available. |
| +0 :ok: | detsecrets | 0m 0s | | detect-secrets was not available.
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| +0 :ok: | xmllint | 0m 0s | | 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 1 new or modified test files. |
|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 115m 38s | | trunk passed |
| +1 :green_heart: | compile | 1m 26s | | trunk passed with JDK
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | compile | 1m 11s | | trunk passed with JDK
Private Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | checkstyle | 1m 14s | | trunk passed |
| +1 :green_heart: | mvnsite | 1m 21s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 21s | | trunk passed with JDK
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javadoc | 1m 44s | | trunk passed with JDK
Private Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | spotbugs | 3m 11s | | trunk passed |
| +1 :green_heart: | shadedclient | 43m 48s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 1m 10s | | the patch passed |
| +1 :green_heart: | compile | 1m 16s | | the patch passed with JDK
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javac | 1m 16s | | the patch passed |
| +1 :green_heart: | compile | 1m 5s | | the patch passed with JDK
Private Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | javac | 1m 5s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| -0 :warning: | checkstyle | 1m 2s |
[/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7808/4/artifact/out/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt)
| hadoop-hdfs-project/hadoop-hdfs: The patch generated 8 new + 386 unchanged
- 0 fixed = 394 total (was 386) |
| +1 :green_heart: | mvnsite | 1m 10s | | the patch passed |
| +1 :green_heart: | javadoc | 1m 1s | | the patch passed with JDK
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javadoc | 1m 30s | | the patch passed with JDK
Private Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09 |
| +1 :green_heart: | spotbugs | 3m 17s | | the patch passed |
| +1 :green_heart: | shadedclient | 46m 4s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 119m 39s | | hadoop-hdfs in the patch
passed. |
| +1 :green_heart: | asflicense | 0m 43s | | The patch does not
generate ASF License warnings. |
| | | 348m 16s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.51 ServerAPI=1.51 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7808/4/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/7808 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets xmllint |
| uname | Linux 43486578d9a9 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 | trunk / 41d66a06c647fffac283978127b697a339fc2544 |
| 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-7808/4/testReport/ |
| Max. process+thread count | 1917 (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-7808/4/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.
> Support balanced read distribution ordering in getBlockLocations()
> ------------------------------------------------------------------
>
> Key: HDFS-17807
> URL: https://issues.apache.org/jira/browse/HDFS-17807
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 2.10.0, 3.4.1
> Reporter: Rajan Dhabalia
> Priority: Major
> Labels: pull-request-available
>
> The current getBlockLocations method returns replica locations without
> considering the real-time load on individual DataNodes. This can lead to
> clients repeatedly selecting the same DataNode, particularly when network
> distance or rack locality remains unchanged. Since data locality isn’t always
> reliable due to various operational factors, the existing network
> topology–based ordering has not fully optimized performance and may
> inadvertently create load hotspots. so, replica ordering based on dynamic
> weight metric and specifically current read rate or read load will create
> more balanced read across the dataodes in a cluster.
> The policy is disabled by default and can be enabled to replace the current
> ordering mechanism, offering a more adaptive and performance-aware read path
> strategy.
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