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https://issues.apache.org/jira/browse/HDFS-17216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17771342#comment-17771342
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ASF GitHub Bot commented on HDFS-17216:
---------------------------------------
hadoop-yetus commented on PR #6138:
URL: https://github.com/apache/hadoop/pull/6138#issuecomment-1744262875
:confetti_ball: **+1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 42s | | Docker mode activated. |
|||| _ Prechecks _ |
| +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.
|
| +0 :ok: | xmllint | 0m 1s | | 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 | 45m 2s | | trunk passed |
| +1 :green_heart: | compile | 0m 32s | | trunk passed with JDK
Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04 |
| +1 :green_heart: | compile | 0m 33s | | trunk passed with JDK
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| +1 :green_heart: | checkstyle | 0m 34s | | trunk passed |
| +1 :green_heart: | mvnsite | 0m 34s | | trunk passed |
| +1 :green_heart: | javadoc | 0m 37s | | trunk passed with JDK
Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04 |
| +1 :green_heart: | javadoc | 0m 33s | | trunk passed with JDK
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| +1 :green_heart: | spotbugs | 0m 56s | | trunk passed |
| +1 :green_heart: | shadedclient | 33m 34s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 0m 25s | | the patch passed |
| +1 :green_heart: | compile | 0m 23s | | the patch passed with JDK
Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04 |
| +1 :green_heart: | javac | 0m 23s | | the patch passed |
| +1 :green_heart: | compile | 0m 23s | | the patch passed with JDK
Private Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| +1 :green_heart: | javac | 0m 23s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| -0 :warning: | checkstyle | 0m 19s |
[/results-checkstyle-hadoop-tools_hadoop-distcp.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6138/11/artifact/out/results-checkstyle-hadoop-tools_hadoop-distcp.txt)
| hadoop-tools/hadoop-distcp: The patch generated 1 new + 6 unchanged - 0
fixed = 7 total (was 6) |
| +1 :green_heart: | mvnsite | 0m 26s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 23s | | the patch passed with JDK
Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04 |
| +1 :green_heart: | javadoc | 0m 21s | | the patch passed with JDK
Private Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| +1 :green_heart: | spotbugs | 0m 49s | | the patch passed |
| +1 :green_heart: | shadedclient | 33m 6s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 17m 19s | | hadoop-distcp in the patch
passed. |
| +1 :green_heart: | asflicense | 0m 41s | | The patch does not
generate ASF License warnings. |
| | | 143m 5s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.43 ServerAPI=1.43 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6138/11/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/6138 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient codespell detsecrets xmllint spotbugs checkstyle |
| uname | Linux 79b753686547 4.15.0-213-generic #224-Ubuntu SMP Mon Jun 19
13:30:12 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / a5cf720c0cede2baed1f1bbf764a90189a3b326c |
| Default Java | Private Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| Multi-JDK versions |
/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.20+8-post-Ubuntu-1ubuntu120.04
/usr/lib/jvm/java-8-openjdk-amd64:Private
Build-1.8.0_382-8u382-ga-1~20.04.1-b05 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6138/11/testReport/ |
| Max. process+thread count | 645 (vs. ulimit of 5500) |
| modules | C: hadoop-tools/hadoop-distcp U: hadoop-tools/hadoop-distcp |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6138/11/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.
> When distcp handle the small files, the bandwidth parameter will be invalid,
> resulting in serious overspeed behavior
> --------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-17216
> URL: https://issues.apache.org/jira/browse/HDFS-17216
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: distcp
> Affects Versions: 3.3.4
> Reporter: xiaojunxiang
> Priority: Major
> Labels: pull-request-available
> Attachments: DiscpAnalyze.jpg
>
>
> When distcp copies small files (file size slightly smaller than the
> bandwidth), the throbber only starts to throb after 1 second, and the
> throttled is specific to a single file. so the throbber becomes invalid,
> causing distcp to fill the cluster bandwidth and crush production traffic,
> which is a terrible thing.
> Also, it takes time for files to set up the IO pipeline, so you shouldn't
> test with very small files, which will slow the transfer, especially as
> bandwidth kicks in, which will amplify the impact of small files on the rate
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