binlijin created HBASE-17332:
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Summary: Replace HashMap to Array for
DataBlockEncoding.idToEncoding
Key: HBASE-17332
URL: https://issues.apache.org/jira/browse/HBASE-17332
Project: HBase
Issue Type: Improvement
Affects Versions: 2.0.0
Reporter: binlijin
Assignee: binlijin
Fix For: 2.0.0
Array is faster than HashMap also no need to autoboxing.
I can see the DataBlockEncoding#getDataBlockEncoderById is a hot method if
enable encoding in my perf test(Random read, all data cache in LruBlockCache).
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