Franklinsam Paul created ZEPPELIN-3246:
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Summary: Need option for automatically restart the livy
interpreter automatically as zeppelin does not start new Livy session if yarn
livy session application is killed
Key: ZEPPELIN-3246
URL: https://issues.apache.org/jira/browse/ZEPPELIN-3246
Project: Zeppelin
Issue Type: Improvement
Components: zeppelin-interpreter
Affects Versions: 0.7.3, 0.8.0
Reporter: Franklinsam Paul
Scenario:
1) Create a livy notebook
2) run 2 paragraph ( Make sure a livy session yarn application is started )
3) Clone livy notebook
4) Kill yarn livy application
5) Run paragraphs from Clone livy notebook
Here, Cloned notebook para fails with
"org.springframework.web.client.HttpServerErrorException: 500 Internal Server
Error".
Zeppelin still try to connect to previous livy session which is killed. It does
not start new session.
Bug fix for https://issues.apache.org/jira/browse/ZEPPELIN-2988 is only
improves the error message when the livy session is dead. In a scenario where
user makes a mistake in a query, he might need to kill the job, but killing
yarn livy session makes the interpreter inaccessible for all the users. It
would be more reasonable to generate a notification (to investigate the cause
why the session has been dead) on the yarn livy session's dead following by an
automatic interpreter restart to restore the service quickly without manual
intervention. At-least this auto restart of interpreter could be provided as a
optional feature or a possible workaround without manual intervention could be
very helpful.
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