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From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-10949) Meta scan could hang
Date Wed, 09 Apr 2014 18:56:16 GMT
Jimmy Xiang created HBASE-10949:
-----------------------------------

             Summary: Meta scan could hang
                 Key: HBASE-10949
                 URL: https://issues.apache.org/jira/browse/HBASE-10949
             Project: HBase
          Issue Type: Bug
            Reporter: Jimmy Xiang
            Priority: Critical
             Fix For: 0.99.0


When I play with ITBLL (from trunk tip), sometimes, meta scan hangs when the cluster is rolling
restarted. When this happens, the master takes about 1000% of CPU. It looks like there is
an infinite loop somewhere.  The logs show nothing interesting except some meta scanner RPC
calls timed out. Jstask shows the 10 high QoS RPC handlers are busy with meta scanning.

However, if I run it again without HBASE-10018, things are fine. I suspect there is something
to do with the small/reverse scan.

By the way, I see this problem even with log replay off and hfile version = 2.



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