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https://issues.apache.org/jira/browse/NIFI-6341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16855724#comment-16855724
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ASF subversion and git services commented on NIFI-6341:
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Commit 60b5c13ce95fd4d4a5edf0f08b81af19e71b67ee in nifi's branch
refs/heads/master from Mark Payne
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=60b5c13 ]
NIFI-6341: Addressed bug that can result in a deadlock if Thread 1 adds a
Controller Service to a Process Group (which obtains group's write lock and
AbstractComponent's Lock) while at the same time Thread 2 attempts to peform
validation on the service (which obtains Controller Service's write lock, then
AbstractComponent's Lock)
This closes #3510.
Signed-off-by: Bryan Bende <[email protected]>
> Deadlock can occur during asynchronous validation
> -------------------------------------------------
>
> Key: NIFI-6341
> URL: https://issues.apache.org/jira/browse/NIFI-6341
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Mark Payne
> Assignee: Mark Payne
> Priority: Major
> Fix For: 1.10.0
>
> Attachments: NIFI-6341-thread-dump.txt
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> We can occasionally encounter a deadlock if a component is being validated at
> the same time that it is being added to a Process Group. Relevant parts of a
> thread dump attached.
>
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