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https://issues.apache.org/jira/browse/SPARK-25692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16734934#comment-16734934
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Dongjoon Hyun commented on SPARK-25692:
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Hi, [~zsxwing] and [~tgraves]. 

While looking other failures, I notice that this failure still happens 
frequently in Maven testing. 

The failure is always `fetchBothChunks`. Can we increase the timeout from 5 
second to 10 (or 20) second? Does it hide the underlying real issue?

- 
[5828|https://amplab.cs.berkeley.edu/jenkins/view/Spark%20QA%20Test%20(Dashboard)/job/spark-master-test-maven-hadoop-2.7/5828/testReport]
- 
[5822|https://amplab.cs.berkeley.edu/jenkins/view/Spark%20QA%20Test%20(Dashboard)/job/spark-master-test-maven-hadoop-2.7/5822/testReport]
- 
[5814|https://amplab.cs.berkeley.edu/jenkins/view/Spark%20QA%20Test%20(Dashboard)/job/spark-master-test-maven-hadoop-2.7/5814/testReport]

> Flaky test: ChunkFetchIntegrationSuite.fetchBothChunks
> ------------------------------------------------------
>
>                 Key: SPARK-25692
>                 URL: https://issues.apache.org/jira/browse/SPARK-25692
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 3.0.0
>            Reporter: Shixiong Zhu
>            Priority: Blocker
>         Attachments: Screen Shot 2018-10-22 at 4.12.41 PM.png, Screen Shot 
> 2018-11-01 at 10.17.16 AM.png
>
>
> Looks like the whole test suite is pretty flaky. See: 
> https://amplab.cs.berkeley.edu/jenkins/job/spark-master-test-maven-hadoop-2.6/5490/testReport/junit/org.apache.spark.network/ChunkFetchIntegrationSuite/history/
> This may be a regression in 3.0 as this didn't happen in 2.4 branch.



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