Liang Xie created HADOOP-9504:
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Summary: create metricsRateAttributeMod with ConcurrentHashMap to
avoid hashmap concurrent race
Key: HADOOP-9504
URL: https://issues.apache.org/jira/browse/HADOOP-9504
Project: Hadoop Common
Issue Type: Bug
Components: metrics
Affects Versions: 2.0.3-alpha, 3.0.0
Reporter: Liang Xie
Assignee: Liang Xie
Priority: Critical
Please see HBASE-8416 for detail information.
we need to take care of the synchronization for HashMap put(), otherwise it may
lead to spin loop.
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