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https://issues.apache.org/jira/browse/HDFS-17542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17875400#comment-17875400
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ASF GitHub Bot commented on HDFS-17542:
---------------------------------------
hadoop-yetus commented on PR #6915:
URL: https://github.com/apache/hadoop/pull/6915#issuecomment-2301434368
:confetti_ball: **+1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 12m 15s | | 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 | 45m 21s | | trunk passed |
| +1 :green_heart: | compile | 1m 21s | | trunk passed with JDK
Ubuntu-11.0.24+8-post-Ubuntu-1ubuntu320.04 |
| +1 :green_heart: | compile | 1m 17s | | trunk passed with JDK
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| +1 :green_heart: | checkstyle | 1m 10s | | trunk passed |
| +1 :green_heart: | mvnsite | 1m 27s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 10s | | trunk passed with JDK
Ubuntu-11.0.24+8-post-Ubuntu-1ubuntu320.04 |
| +1 :green_heart: | javadoc | 1m 45s | | trunk passed with JDK
Private Build-1.8.0_422-8u422-b05-1~20.04-b05 |
| +1 :green_heart: | spotbugs | 3m 18s | | trunk passed |
| +1 :green_heart: | shadedclient | 36m 12s | | branch has no errors
when building and testing our client artifacts. |
| -0 :warning: | patch | 36m 33s | | Used diff version of patch file.
Binary files and potentially other changes not applied. Please rebase and
squash commits if necessary. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 1m 11s | | the patch passed |
| +1 :green_heart: | compile | 1m 15s | | the patch passed with JDK
Ubuntu-11.0.24+8-post-Ubuntu-1ubuntu320.04 |
| +1 :green_heart: | javac | 1m 15s | | the patch passed |
| +1 :green_heart: | compile | 1m 7s | | the patch passed with JDK
Private Build-1.8.0_422-8u422-b05-1~20.04-b05 |
| +1 :green_heart: | javac | 1m 7s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| -0 :warning: | checkstyle | 0m 58s |
[/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6915/2/artifact/out/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt)
| hadoop-hdfs-project/hadoop-hdfs: The patch generated 2 new + 116 unchanged
- 1 fixed = 118 total (was 117) |
| +1 :green_heart: | mvnsite | 1m 18s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 54s | | the patch passed with JDK
Ubuntu-11.0.24+8-post-Ubuntu-1ubuntu320.04 |
| +1 :green_heart: | javadoc | 1m 38s | | the patch passed with JDK
Private Build-1.8.0_422-8u422-b05-1~20.04-b05 |
| +1 :green_heart: | spotbugs | 3m 17s | | the patch passed |
| +1 :green_heart: | shadedclient | 36m 11s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 218m 12s | | hadoop-hdfs in the patch
passed. |
| +1 :green_heart: | asflicense | 0m 47s | | The patch does not
generate ASF License warnings. |
| | | 370m 25s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.46 ServerAPI=1.46 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6915/2/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/6915 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
| uname | Linux 2c8155d72793 5.15.0-117-generic #127-Ubuntu SMP Fri Jul 5
20:13:28 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / dd74849c9d24bac57b6496f075803d75b0cc2c8d |
| Default Java | Private Build-1.8.0_422-8u422-b05-1~20.04-b05 |
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|
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6915/2/testReport/ |
| Max. process+thread count | 4104 (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-6915/2/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.
> EC: Optimize the EC block reconstruction.
> -----------------------------------------
>
> Key: HDFS-17542
> URL: https://issues.apache.org/jira/browse/HDFS-17542
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Chenyu Zheng
> Assignee: Chenyu Zheng
> Priority: Major
> Labels: pull-request-available
>
> The current reconstruction process of EC blocks is based on the original
> contiguous blocks. It is mainly implemented through the work constructed by
> computeReconstructionWorkForBlocks. It can be roughly divided into three
> processes:
> * scheduleReconstruction
> * chooseTargets
> * validateReconstructionWork
> For ordinary contiguous blocks:
> * (1) scheduleReconstruction
> Select srcNodes as the source of the copy block according to the status of
> each replica of the block.
> * (2) chooseTargets
> Select the target of the copy.
> * (3) validateReconstructionWork
> Add the copy command to srcNode, srcNode receives the command through
> heartbeat, and executes the block copy from src to target.
> For EC blocks:
> (1) and (2) seems nearly same. However, whether to perform simple block copy
> or block reconstruction for EC blocks is determined in (3). And when some
> storage is busy, may result no work, it will lead to the problem described in
> HDFS-17516. Even if no block copying or block reconstruction is generated,
> pendingReconstruction and neededReconstruction will still be updated until
> the block times out, which wastes the scheduling opportunity.
> Because the decision of whether to perform block copy or block reconstruction
> is made in (3), unnecessary liveBusyBlockIndices, and
> excludeReconstructedIndices are introduced. We know many bugs are related
> here. These should be avoided.
> Improvements:
> * Move the work of deciding whether to copy or reconstruct blocks from (3)
> to (1).
> Such improvements are more conducive to implementing the explicit
> specification of the reconstruction block index mentioned in HDFS-16874.
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