Liyin Tang created HBASE-6930:
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Summary: [89-fb] Avoid acquiring the same row lock repeatedly
Key: HBASE-6930
URL: https://issues.apache.org/jira/browse/HBASE-6930
Project: HBase
Issue Type: Bug
Reporter: Liyin Tang
When processing the multiPut, multiMutations or multiDelete operations, each
IPC handler thread tries to acquire a lock for each row key in these batches.
If there are duplicated row keys in these batches, previously the IPC handler
thread will repeatedly acquire the same row key again and again.
So the optimization is to sort each batch operation based on the row key in the
client side, and skip acquiring the same row lock repeatedly in the server side.
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