Unresponsive region server, potential deadlock
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Key: HBASE-2545
URL: https://issues.apache.org/jira/browse/HBASE-2545
Project: Hadoop HBase
Issue Type: Bug
Components: regionserver
Affects Versions: 0.20.4
Environment: Ubuntu 8.04.4 LTS, Hadoop 0.20.2, Amazon EC2 x-large
cluster
Reporter: Kris Jirapinyo
Attachments:
hbase-hadoop-regionserver-mi-prod-hbase05.ec2.biz360.com.out
We have a 15-node (14RS+1Master) hbase cluster. We just recently upgraded from
0.20.3 to 0.20.4. This cluster does have colocated hadoop MR, but we mostly
use another MR cluster to hit it. Upon start, the cluster runs the jobs fine
for about an hour. Afterwards, an RS seems to have locked up. Doing a get for
a row in region being served by that region server hangs (cannot even ctrl+c
out of the hbase shell). Attached is the thread dump. Verified in UI that the
affect server runs on 0.20.4 and not 0.20.3.
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