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Posted to common-issues@hadoop.apache.org by "Xiaoyu Yao (JIRA)" <ji...@apache.org> on 2016/05/16 19:29:12 UTC

[jira] [Created] (HADOOP-13159) Fix potential NPE in Metrics2 source for RPC scheduler

Xiaoyu Yao created HADOOP-13159:
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             Summary: Fix potential NPE in Metrics2 source for RPC scheduler
                 Key: HADOOP-13159
                 URL: https://issues.apache.org/jira/browse/HADOOP-13159
             Project: Hadoop Common
          Issue Type: Bug
          Components: ipc
    Affects Versions: 2.8.0
            Reporter: Xiaoyu Yao
            Assignee: Xiaoyu Yao


HADOOP-12985 introduced a few metrics2 counters for DecayRpcScheduler. The counters should be initialized before the updater thread is created/executed. Otherwise, this is a chance of NPE  if the updater thread get executed before the counters are fully initialized. I will post a patch for it shortly. 



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