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Posted to yarn-dev@hadoop.apache.org by "Daniel Templeton (JIRA)" <ji...@apache.org> on 2017/08/30 21:41:00 UTC

[jira] [Created] (YARN-7133) Clean up lock-try order fair scheduler

Daniel Templeton created YARN-7133:
--------------------------------------

             Summary: Clean up lock-try order fair scheduler
                 Key: YARN-7133
                 URL: https://issues.apache.org/jira/browse/YARN-7133
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: fairscheduler
    Affects Versions: 3.0.0-alpha4
            Reporter: Daniel Templeton


There are many places that follow the pattern:{code}try {
  lock.lock();
  ...
} finally {
  lock.unlock();
}{code}

There are a couple of reasons that's a bad idea.  The correct pattern is:{code}lock.lock();
try {
  ...
} finally {
  lock.unlock();
}{code}




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