Why does the Restart button not work on my device?

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What's this PR for? When I enable authentication with Shiro or switch interpreter mode to Per user isolated (Option), test flow: Execute simple code like sc.version, click Restart button.

WhatisthisPRfor?WhenIenableauthenticationwith

What is this PR for?

When I enable authentication with

1shiro

or switch interpreter mode to

1Per user & isolated

,

1Restart

does not work and it is possible to make zombie process.

• Environment:OS: CentOS 6Zeppelin: master, branch-0.7Configuration: Enable authentication with

  1shiro

  Set interpreter mode to

  1Per user & isolated

  (Option)

• Test flow:

• Execute simple code such as1sc.version
• Click "Restart" button
• Execute simple code again
• Shutdown zeppelin
• Monitor java processes