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Posted to dev@twill.apache.org by "Ali Anwar (JIRA)" <ji...@apache.org> on 2017/04/26 04:20:04 UTC

[jira] [Created] (TWILL-231) YarnTwillRunnerService should renew delegation tokens in parallel

Ali Anwar created TWILL-231:
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             Summary: YarnTwillRunnerService should renew delegation tokens in parallel
                 Key: TWILL-231
                 URL: https://issues.apache.org/jira/browse/TWILL-231
             Project: Apache Twill
          Issue Type: Improvement
            Reporter: Ali Anwar


Currently, YarnTwillRunnerService renews delegation tokens for the running applications in a serial fashion:
https://github.com/apache/twill/blob/2a316a60b041f39bff95bfcd45f308f7c89d4bfa/twill-yarn/src/main/java/org/apache/twill/yarn/YarnTwillRunnerService.java#L702-L721

If there are many applications running, this can take a long time. These renew tasks can be done in parallel to speed this up.



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