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From "Murali Krishna. P" <muralikpb...@yahoo.com>
Subject HBase jobs hanging
Date Thu, 02 Jul 2009 11:14:47 GMT
Hi,
        I was trying some mapreduce jobs on my cluster, it stops reading from the table after
some point. So, I tried the basic rowcounter job on the same table and the map tasks gets
stuck at the same point. Tasks are not getting killed but it is just waiting on the RecordReader.next()
call.
  Even if i start the sequential 'count' from the shell, it hangs after counting same number
of rows.

Dont see much exceptions on the logs, except the following on one of the region server.
2009-07-02 03:44:54,412 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Scanner -2204554202283641986
lease expired
2009-07-02 03:57:27,101 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Scanner -6041936359480242732
lease expired
2009-07-02 03:57:27,293 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Scanner 6008116931812072259
lease expired
2009-07-02 03:57:29,165 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Scanner 6927781754287164415
lease expired

Table has 3 regions and I am using the 0.20.0 alpha build. Need help in resolving this scanner
issue

Thanks,
Murali Krishna

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