one regionserver no response

[sunww]

Hi

I’m using HBase 0.94.2 with about 20 regionserver。Today I find one
regionserver don't response to client. I kill the regionserver then hbase
back to normal.

I find a deadlock in jstack log

And there is some DFSOutputStream error and  some “HLog: Could not sync”
in regionserver log.

 

         Jstack log is in http://paste2.org/WctYp4ce

         Regionserver log is in http://paste2.org/zvjL0AfP

         

Any suggestion will be appreciated. Thanks.