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From Wojciech Langiewicz <wlangiew...@gmail.com>
Subject HBase performance evaluation master not running problem.
Date Fri, 21 Jan 2011 16:12:46 GMT
Hello
I have problem with running HBase performance tests from 
org.apache.hadoop.hbase.PerformanceEvaluation package. I'm using version 
from CDH3,
Tests are ok when argument nclients is 1, but in case of greater number, 
after mappers reaching 100% I get this exception (I didn't test all 
tests, but all of tested by me failed, 'scan' and 'randomRead' fail for 
sure):

11/01/21 17:05:19 INFO mapred.JobClient: Task Id : 
attempt_201101211442_0005_m_000000_0, Status : FAILED
org.apache.hadoop.hbase.MasterNotRunningException
	at 
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getMaster(HConnectionManager.java:416)
	at org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:78)
	at 
org.apache.hadoop.hbase.PerformanceEvaluation$Test.testSetup(PerformanceEvaluation.java:745)
	at 
org.apache.hadoop.hbase.PerformanceEvaluation$Test.test(PerformanceEvaluation.java:764)
	at 
org.apache.hadoop.hbase.PerformanceEvaluation.runOneClient(PerformanceEvaluation.java:1097)
	at 
org.apache.hadoop.hbase.PerformanceEvaluation$EvaluationMapTask.map(PerformanceEvaluation.java:446)
	at 
org.apache.hadoop.hbase.PerformanceEvaluation$EvaluationMapTask.map(PerformanceEvaluation.java:399)
	at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:639)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:315)
	at org.apache.hadoop.mapred.Child$4.run(Child.java:217)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:396)
	at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1063)
	at org.apache.hadoop.mapred.Child.main(Child.java:211)

Do you have any ideas how to solve this?

--
Wojciech Langiewicz

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