I have a problem when start hadoop.
DataBlockScanner consume up to 100% of one CPU.
Master log is:
2012-04-02 11:25:49,793 INFO org.apache.hadoop.hdfs.StateChange: BLOCK NameSystem.processReport: from 192.168.33.44:50010, blocks: 16148, processing time: 13 msecs
Slave log is:
2012-04-02 11:09:34,109 INFO org.apache.hadoop.hdfs.server.datanode.DataBlockScanner: Verification succeeded for blk_-1757906724564777881_10532084
I checked hadoop fsck and found no error or corrupt block.
Why is the CPU usage so high, and how to stop the block verification?