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https://issues.apache.org/jira/browse/DRILL-3052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17437899#comment-17437899
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Vitalii Diravka commented on DRILL-3052:
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Move the comment from code to Jira history:
{code:java}
// DRILL-3052: Since root fragment is waiting on data and leaf fragments are
cancelled before they send any
// data to root, root will never run. This test will timeout if the root did
not send the final state to Foreman.
{code}
Actually the issue is resolved in DRILL-7973 by adding Thread.sleep(1000)
before starting _CancellingThread_ thread.
> canceling a fragment executor before it starts running will cause the Foreman
> to wait indefinitely for a terminal message from that fragment
> --------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DRILL-3052
> URL: https://issues.apache.org/jira/browse/DRILL-3052
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Abdel Hakim Deneche
> Assignee: Jacques Nadeau
> Priority: Major
> Fix For: 1.0.0
>
> Attachments: DRILL-3052.1.patch.txt
>
>
> When a Foreman receives a cancellation from the client it will cancel all
> it's fragments and go into a CANCELLATION_REQUEST state. Each fragment will
> cancel it's work, close it's resources and report a terminal state to the
> Foreman (either CANCELLED or FAILED). The Foreman will wait for all fragments
> to report before sending a terminal message to the client.
> If a fragment is cancelled before it started running (similar to DRILL-2878)
> it will close it's resources but it will never send a terminal state to the
> foreman which will cause the foreman to wait indefinitely.
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