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https://issues.apache.org/jira/browse/HADOOP-19714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18024399#comment-18024399
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ASF GitHub Bot commented on HADOOP-19714:
-----------------------------------------

hadoop-yetus commented on PR #8010:
URL: https://github.com/apache/hadoop/pull/8010#issuecomment-3364446669

   :broken_heart: **-1 overall**
   
   
   
   
   
   
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any @author tags.  |
   | +1 :green_heart: |  test4tests  |   0m  0s |  |  The patch appears to 
include 1 new or modified test files.  |
   |||| _ trunk Compile Tests _ |
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[/branch-mvninstall-root.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8010/1/artifact/out/branch-mvninstall-root.txt)
 |  root in trunk failed.  |
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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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when building and testing our client artifacts.  |
   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   0m 16s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   0m 16s |  |  the patch passed with JDK 
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04  |
   | +1 :green_heart: |  javac  |   0m 16s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   0m 16s |  |  the patch passed with JDK 
Private Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09  |
   | +1 :green_heart: |  javac  |   0m 16s |  |  the patch passed  |
   | -1 :x: |  blanks  |   0m  0s | 
[/blanks-eol.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8010/1/artifact/out/blanks-eol.txt)
 |  The patch has 3 line(s) that end in blanks. Use git apply --whitespace=fix 
<<patch_file>>. Refer https://git-scm.com/docs/git-apply  |
   | -0 :warning: |  checkstyle  |   0m 13s | 
[/results-checkstyle-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-jobclient.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8010/1/artifact/out/results-checkstyle-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-jobclient.txt)
 |  
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient:
 The patch generated 4 new + 58 unchanged - 0 fixed = 62 total (was 58)  |
   | +1 :green_heart: |  mvnsite  |   0m 18s |  |  the patch passed  |
   | +1 :green_heart: |  javadoc  |   0m 12s |  |  the patch passed with JDK 
Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04  |
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   |||| _ Other Tests _ |
   | -1 :x: |  unit  |  90m  8s | 
[/patch-unit-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-jobclient.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8010/1/artifact/out/patch-unit-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-jobclient.txt)
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   | +1 :green_heart: |  asflicense  |   0m 26s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 282m 25s |  |  |
   
   
   | Reason | Tests |
   |-------:|:------|
   | Failed junit tests | hadoop.mapreduce.v2.TestUberAM |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
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https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8010/1/artifact/out/Dockerfile
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   | GITHUB PR | https://github.com/apache/hadoop/pull/8010 |
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Build-1.8.0_452-8u452-ga~us1-0ubuntu1~20.04-b09 |
   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8010/1/testReport/ |
   | Max. process+thread count | 1222 (vs. ulimit of 5500) |
   | modules | C: 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient
 U: 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient
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   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8010/1/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 |
   
   
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> testCombineFileInputFormat is overly constrained and can sometimes fail
> -----------------------------------------------------------------------
>
>                 Key: HADOOP-19714
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19714
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Paco Chan
>            Priority: Trivial
>              Labels: pull-request-available
>
> the Hadoop documentation states that the number of paths per split in 
> {{CombineFileInputFormat}} is not fixed and can vary. 
>  
> {quote}"If a maxSplitSize is specified, then blocks on the same node are 
> combined to form a single split. Blocks that are left over are then combined 
> with other blocks in the same rack." 
> [hadoop.apache.org|https://hadoop.apache.org/docs/stable/api/org/apache/hadoop/mapred/lib/CombineFileInputFormat.html?utm_source=chatgpt.com]
> {quote}
> This means that the number of paths in a split is determined by the block 
> placement and the configuration settings, leading to potential variations in 
> the number of paths per split.
>  
> This causes the test to sometimes fail depending on the split. As such, the 
> test could be reworked to avoid strictly testing for the number of paths in 
> each split. 
> h4.



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