Staffan Friberg created HDFS-9221:
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Summary: Reduce allocation during block reports
Key: HDFS-9221
URL: https://issues.apache.org/jira/browse/HDFS-9221
Project: Hadoop HDFS
Issue Type: Improvement
Components: performance
Reporter: Staffan Friberg
When the BufferDecoder in BlockListAsLongs converts the stored value to a
ReplicaState enum it calls ReplicaState.getState(int) unfortunately this method
creates a ReplicaState[] for each call since it calls ReplicaState.values().
This patch creates a cached version of the values and thus avoid all allocation
when doing the conversion.
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