Harel Ben Attia created ZEPPELIN-3401:
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Summary: Deadlock while restarting interpreter
Key: ZEPPELIN-3401
URL: https://issues.apache.org/jira/browse/ZEPPELIN-3401
Project: Zeppelin
Issue Type: Bug
Components: Core
Affects Versions: 0.8.0
Environment: java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)
linux info: 3.13.0-92-generic #139-Ubuntu SMP Tue Jun 28 20:42:26 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux
Reporter: Harel Ben Attia
Attachments: jstack.out
After running properly for ~15 days, the zeppelin UI started at some point to
hang forever when restarting an interpreter. trying to analyze this shows that
the server is deadlocked. The jstack output is not descriptive enough, because
running it without -F didn't work, but shows a deadlock between two qtp threads.
The status of the blocked threads seems very similar to ZEPPELIN-1834, with
many getParagraph/s() calls, but can't really ascertain that it's the same bug,
especially with the fact that ZEPPELIN-1834 seems to be marked as solved for
0.7.0.
Only a zeppelin restart solved the issue.
We're running in user-scoped sessions (spark interpreter).
We're running zeppelin-0.8.0-SNAPSHOT from the branch-0.8 branch commit
714eb963d6b58df88239830ee487fe19613d1911 . Additional commits in that branch
since then do not seem to be related.
Will be glad to provide more info if needed.
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