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https://issues.apache.org/jira/browse/HADOOP-18883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17803177#comment-17803177
 ] 

ASF GitHub Bot commented on HADOOP-18883:
-----------------------------------------

hadoop-yetus commented on PR #6022:
URL: https://github.com/apache/hadoop/pull/6022#issuecomment-1877150365

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
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   |||| _ trunk Compile Tests _ |
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Ubuntu-11.0.21+9-post-Ubuntu-0ubuntu120.04  |
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   | -0 :warning: |  patch  |  39m 44s |  |  Used diff version of patch file. 
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squash commits if necessary.  |
   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   0m 29s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   0m 30s |  |  the patch passed with JDK 
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   | +1 :green_heart: |  javac  |   0m 30s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   0m 26s |  |  the patch passed with JDK 
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   |||| _ Other Tests _ |
   | +1 :green_heart: |  unit  |   1m 59s |  |  hadoop-azure in the patch 
passed.  |
   | +1 :green_heart: |  asflicense  |   0m 36s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 141m  1s |  |  |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.43 ServerAPI=1.43 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6022/7/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/6022 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
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   | uname | Linux 0797b91afd29 5.15.0-88-generic #98-Ubuntu SMP Mon Oct 2 
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https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6022/7/testReport/ |
   | Max. process+thread count | 599 (vs. ulimit of 5500) |
   | modules | C: hadoop-tools/hadoop-azure U: hadoop-tools/hadoop-azure |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6022/7/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.
   
   




> Expect-100 JDK bug resolution: prevent multiple server calls
> ------------------------------------------------------------
>
>                 Key: HADOOP-18883
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18883
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/azure
>            Reporter: Pranav Saxena
>            Assignee: Pranav Saxena
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.4.0
>
>
> This is inline to JDK bug: [https://bugs.openjdk.org/browse/JDK-8314978].
>  
> With the current implementation of HttpURLConnection if server rejects the 
> “Expect 100-continue” then there will be ‘java.net.ProtocolException’ will be 
> thrown from 'expect100Continue()' method.
> After the exception thrown, If we call any other method on the same instance 
> (ex getHeaderField(), or getHeaderFields()). They will internally call 
> getOuputStream() which invokes writeRequests(), which make the actual server 
> call. 
> In the AbfsHttpOperation, after sendRequest() we call processResponse() 
> method from AbfsRestOperation. Even if the conn.getOutputStream() fails due 
> to expect-100 error, we consume the exception and let the code go ahead. So, 
> we can have getHeaderField() / getHeaderFields() / getHeaderFieldLong() which 
> will be triggered after getOutputStream is failed. These invocation will lead 
> to server calls.



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