SplitLog in HMaster spend long time, move it to regionserver
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Key: HBASE-3947
URL: https://issues.apache.org/jira/browse/HBASE-3947
Project: HBase
Issue Type: Improvement
Components: master, regionserver, zookeeper
Reporter: mingjian
Fix For: 0.90.4
One of our 100 nodes cluster crashed by namenode crash.
We restarted and found it spend about two and a half hours to split hlogs.
After crashed, there are about 3,500 hfiles in /hbase/.logs/. Split 1 of them
need about 2~3 seconds.
SplitLog works in a single thread of HMaster. Why not move it to regionservers?
And HMaster only creates split plans and notifies regionserver through
zookeeper.
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