Yechao Chen created HBASE-18772:
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Summary: Replace use AuomicLog with LongAdder
Key: HBASE-18772
URL: https://issues.apache.org/jira/browse/HBASE-18772
Project: HBase
Issue Type: Improvement
Reporter: Yechao Chen
Assignee: Yechao Chen
Priority: Trivial
Currently we use many AtomicLong in HBase Region Code ，such as BucketCache
calss realCacheSize,heapSize,blockNumber,accessCount and Hegion calss
compactionNumBytesCompacted etc .
In JDK8 LongAdder is faster than AtomicLong ,should use this replace
AtomicLong
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