hbase-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jeffrey Zhong (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-10833) Region assignment may fail during cluster start up
Date Tue, 25 Mar 2014 21:15:15 GMT
Jeffrey Zhong created HBASE-10833:
-------------------------------------

             Summary: Region assignment may fail during cluster start up
                 Key: HBASE-10833
                 URL: https://issues.apache.org/jira/browse/HBASE-10833
             Project: HBase
          Issue Type: Bug
          Components: Region Assignment
            Reporter: Jeffrey Zhong
            Assignee: Jeffrey Zhong


This is an intermittent & infrequent issue. It happens when a cluster is starting up,
only when one region server is available for region assignment temporally and master has a
transient issue to talk to the only RS 

When the RPC layer has a hiccup to talk to a RS, the RS will be put in failed server list
and it will stay in failed server list for 2 sec(default value). 

While the 20 region retires completes much shorter than 2 secs, the end result is a failed
assignment. 

Below are the logging for the total time spent on 20 assignment retires, it only took about
36 ms for all the retries.
{code}
2014-03-24 18:14:43,451 WARN  [AM.ZK.Worker-pool2-t59] master.AssignmentManager: Failed assignment
of hbase:labels,,1395668310177.f7372ede6c8bd7de4e91bfeda884cffb. to hor15n18.gq1.ygridcore.net,60020,1395684489232,
trying to assign elsewhere instead; try=1 of 20
….
2014-03-24 18:14:43,487 WARN  [AM.ZK.Worker-pool2-t59] master.AssignmentManager: Failed assignment
of hbase:labels,,1395668310177.f7372ede6c8bd7de4e91bfeda884cffb. to hor15n18.gq1.ygridcore.net,60020,1395684489232,
trying to assign elsewhere instead; try=20 of 20
{code}



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Mime
View raw message