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https://issues.apache.org/jira/browse/HDFS-17509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17845848#comment-17845848
 ] 

ASF GitHub Bot commented on HDFS-17509:
---------------------------------------

hadoop-yetus commented on PR #6784:
URL: https://github.com/apache/hadoop/pull/6784#issuecomment-2107054325

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
   |||| _ Prechecks _ |
   | +1 :green_heart: |  dupname  |   0m 01s |  |  No case conflicting files 
found.  |
   | +0 :ok: |  spotbugs  |   0m 00s |  |  spotbugs executables are not 
available.  |
   | +0 :ok: |  codespell  |   0m 00s |  |  codespell was not available.  |
   | +0 :ok: |  detsecrets  |   0m 01s |  |  detect-secrets was not available.  
|
   | +1 :green_heart: |  @author  |   0m 00s |  |  The patch does not contain 
any @author tags.  |
   | +1 :green_heart: |  test4tests  |   0m 00s |  |  The patch appears to 
include 1 new or modified test files.  |
   |||| _ trunk Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |  94m 50s |  |  trunk passed  |
   | +1 :green_heart: |  compile  |   5m 11s |  |  trunk passed  |
   | +1 :green_heart: |  checkstyle  |   4m 51s |  |  trunk passed  |
   | +1 :green_heart: |  mvnsite  |   5m 19s |  |  trunk passed  |
   | +1 :green_heart: |  javadoc  |   4m 59s |  |  trunk passed  |
   | +1 :green_heart: |  shadedclient  | 152m 26s |  |  branch has no errors 
when building and testing our client artifacts.  |
   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   3m 03s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   2m 29s |  |  the patch passed  |
   | +1 :green_heart: |  javac  |   2m 29s |  |  the patch passed  |
   | +1 :green_heart: |  blanks  |   0m 01s |  |  The patch has no blanks 
issues.  |
   | +1 :green_heart: |  checkstyle  |   2m 07s |  |  the patch passed  |
   | +1 :green_heart: |  mvnsite  |   2m 36s |  |  the patch passed  |
   | +1 :green_heart: |  javadoc  |   2m 20s |  |  the patch passed  |
   | +1 :green_heart: |  shadedclient  | 165m 12s |  |  patch has no errors 
when building and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | +1 :green_heart: |  asflicense  |   5m 43s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 436m 32s |  |  |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | GITHUB PR | https://github.com/apache/hadoop/pull/6784 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
   | uname | MINGW64_NT-10.0-17763 91722a5bf48a 3.4.10-87d57229.x86_64 
2024-02-14 20:17 UTC x86_64 Msys |
   | Build tool | maven |
   | Personality | /c/hadoop/dev-support/bin/hadoop.sh |
   | git revision | trunk / 61d08c583e427df3340a7afcd984ad69943a1675 |
   | Default Java | Azul Systems, Inc.-1.8.0_332-b09 |
   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6784/4/testReport/
 |
   | modules | C: hadoop-hdfs-project/hadoop-hdfs-rbf U: 
hadoop-hdfs-project/hadoop-hdfs-rbf |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch-windows-10/job/PR-6784/4/console
 |
   | versions | git=2.45.0.windows.1 |
   | Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
   
   
   This message was automatically generated.
   
   




> RBF: Fix ClientProtocol.concat  will throw NPE if tgr is a empty file.
> ----------------------------------------------------------------------
>
>                 Key: HDFS-17509
>                 URL: https://issues.apache.org/jira/browse/HDFS-17509
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: liuguanghua
>            Priority: Minor
>              Labels: pull-request-available
>
> hdfs dfs -concat  /tmp/merge /tmp/t1 /tmp/t2
> When /tmp/merge is a empty file, this command will throw NPE via DFSRouter. 
>  
>  



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