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https://issues.apache.org/jira/browse/HADOOP-18816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17750106#comment-17750106
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ASF GitHub Bot commented on HADOOP-18816:
-----------------------------------------

hadoop-yetus commented on PR #5863:
URL: https://github.com/apache/hadoop/pull/5863#issuecomment-1661528034

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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   | +0 :ok: |  buf  |   0m  1s |  |  buf was not available.  |
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   | +1 :green_heart: |  test4tests  |   0m  0s |  |  The patch appears to 
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   |||| _ trunk Compile Tests _ |
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Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1  |
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Private Build-1.8.0_362-8u372-ga~us1-0ubuntu1~20.04-b09  |
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when building and testing our client artifacts.  |
   | -0 :warning: |  patch  |  36m 32s |  |  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  |   0m 57s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |  16m 32s |  |  the patch passed with JDK 
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   | +1 :green_heart: |  javac  |  16m 32s |  |  the patch passed  |
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hadoop-common-project/hadoop-common: The patch generated 0 new + 249 unchanged 
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   |||| _ Other Tests _ |
   | +1 :green_heart: |  unit  |  19m 15s |  |  hadoop-common in the patch 
passed.  |
   | +1 :green_heart: |  asflicense  |   1m 14s |  |  The patch does not 
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   |  |   | 224m 48s |  |  |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.43 ServerAPI=1.43 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5863/9/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/5863 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
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bufcompat |
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13:09:22 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux |
   | Build tool | maven |
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   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5863/9/testReport/ |
   | Max. process+thread count | 3149 (vs. ulimit of 5500) |
   | modules | C: hadoop-common-project/hadoop-common U: 
hadoop-common-project/hadoop-common |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5863/9/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.
   
   




> Rebuild Exceptions on Client side to get genuine exceptions
> -----------------------------------------------------------
>
>                 Key: HADOOP-18816
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18816
>             Project: Hadoop Common
>          Issue Type: Task
>            Reporter: Janus Chow
>            Assignee: Janus Chow
>            Priority: Major
>              Labels: pull-request-available
>
> In current's RPC design, if Server sends an exception back, Client can only 
> rebuild the exception according to the original exception's error message, if 
> the exceptions has some fields containing important information, they will be 
> discarded since we can not rebuild them based on message string easily.
> This ticket is to introduce a new interface for Exceptions which supports 
> reconstructing. If Clients want to rebuild the exception, they can just 
> implement the methods and the reconstruction will be done automatically.
> The interface uses String[] as parameter for simplicity.  I thought of using 
> Protobuf to store all the exceptions or fields, but the generacity can not be 
> perfectlly met. So we need Client to support it by accepting "String[]" and 
> transform the String to it's original type.



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