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https://issues.apache.org/jira/browse/TEZ-3719?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16006019#comment-16006019
]
Gopal V commented on TEZ-3719:
------------------------------
Run failed with
{code}
/home/jenkins/tools/maven/latest/bin/mvn clean test findbugs:findbugs
-DskipTests < /dev/null >
/home/jenkins/jenkins-slave/workspace/PreCommit-TEZ-Build@2/../patchprocess/patchFindBugsOutput.txt
2>&1
awk: cannot open
/home/jenkins/jenkins-slave/workspace/PreCommit-TEZ-Build@2/../patchprocess/patchFindBugsOutput.txt
(No such file or directory)
cp: cannot create regular file
'/home/jenkins/jenkins-slave/workspace/PreCommit-TEZ-Build@2/../patchprocess/patchFindbugsWarningstez-api.xml':
No such file or directory
Exception in thread "main" java.io.FileNotFoundException:
/home/jenkins/jenkins-slave/workspace/PreCommit-TEZ-Build@2/../patchprocess/patchFindbugsWarningstez-api.xml
(No such file or directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:146)
at
edu.umd.cs.findbugs.SortedBugCollection.progessMonitoredInputStream(SortedBugCollection.java:1321)
at
edu.umd.cs.findbugs.SortedBugCollection.readXML(SortedBugCollection.java:322)
at
edu.umd.cs.findbugs.SortedBugCollection.readXML(SortedBugCollection.java:309)
at
edu.umd.cs.findbugs.workflow.SetBugDatabaseInfo.main(SetBugDatabaseInfo.java:176)
{code}
> DAGImpl.computeProgress slows down dispatcher and ipc threads
> -------------------------------------------------------------
>
> Key: TEZ-3719
> URL: https://issues.apache.org/jira/browse/TEZ-3719
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Rajesh Balamohan
> Assignee: Gopal V
> Attachments: dispatcher_holding_lock.png, TEZ-3719.1.patch,
> TEZ-3719.2.patch, TEZ-3719.wip.patch, tez_computeProgress_waiting_for_lock.png
>
>
> The Vertex readLock is held while computing progress, which prevents
> scheduling of tasks from happening on that vertex (which needs a writeLock).
> Making the locked section do as little work as possible would speedup the AM.
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