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Posted to common-dev@hadoop.apache.org by "Xuesen Liang (Jira)" <ji...@apache.org> on 2021/06/09 02:38:00 UTC

[jira] [Created] (HADOOP-17752) Remove lock contention in REGISTRY of Configuration

Xuesen Liang created HADOOP-17752:
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             Summary: Remove lock contention in REGISTRY of Configuration
                 Key: HADOOP-17752
                 URL: https://issues.apache.org/jira/browse/HADOOP-17752
             Project: Hadoop Common
          Issue Type: Improvement
          Components: common
            Reporter: Xuesen Liang


Every Configuration instance is put into *Configuration#REGISTRY* by its constructor. This operation is guard by Configuration.class.

REGISTRY is a *WeakHashMap*, which should be replaced by *ConcurrentHashMap*.



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