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Posted to dev@zeppelin.apache.org by "Li Sheng (JIRA)" <ji...@apache.org> on 2017/01/12 00:23:16 UTC

[jira] [Created] (ZEPPELIN-1941) Zeppelin CronJob with release option result in deadlock

Li Sheng created ZEPPELIN-1941:
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             Summary: Zeppelin CronJob with release option result in deadlock
                 Key: ZEPPELIN-1941
                 URL: https://issues.apache.org/jira/browse/ZEPPELIN-1941
             Project: Zeppelin
          Issue Type: Bug
          Components: Interpreters
    Affects Versions: 0.6.2, 0.6.1, 0.6.0
            Reporter: Li Sheng
             Fix For: 0.7.0


There is a deadlock in concurrent cron job with release resource option.

Scenario:
 Two notebook run with cron job that release resource after job finished.
 
  In Notebook.CronJob.execute() method:
  T1. note.runAll(); // locked paragraphs(lock) and wait to interpreterSettings(lock)

  T2. notebook.getInterpreterFactory().restart()   //locked(interpreterSettings) and wait for paragraphs(lock) during jobAbort.

  This will trigger a deadlock that cause zeppelin hang.

  Detail stack trace please refer `deadlock_cronjob.jstack`



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