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https://issues.apache.org/jira/browse/HBASE-13040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14321193#comment-14321193
]
zhangduo commented on HBASE-13040:
----------------------------------
0.98 does not have this problem. On 0.98 we need to call HMaster.run to start
service so the testcase is safe.
And on branch-1, I found this in log when running the test
{noformat}
2015-02-14 10:47:44,734 FATAL [zhangduo-ubuntu:44957.activeMasterManager]
master.HMaster$1(1474): Failed to become active master
java.lang.IllegalArgumentException: Illegal character <10> at 0. Namespaces can
only contain 'alphanumeric characters': i.e. [a-zA-Z_0-9]:
hbasemeta
at
org.apache.hadoop.hbase.TableName.isLegalNamespaceName(TableName.java:216)
at
org.apache.hadoop.hbase.TableName.isLegalNamespaceName(TableName.java:205)
at org.apache.hadoop.hbase.TableName.<init>(TableName.java:308)
at
org.apache.hadoop.hbase.TableName.createTableNameIfNecessary(TableName.java:345)
at org.apache.hadoop.hbase.TableName.valueOf(TableName.java:466)
at
org.apache.hadoop.hbase.protobuf.ProtobufUtil.toTableName(ProtobufUtil.java:2692)
at
org.apache.hadoop.hbase.HTableDescriptor.convert(HTableDescriptor.java:1557)
at
org.apache.hadoop.hbase.HTableDescriptor.parseFrom(HTableDescriptor.java:1518)
at
org.apache.hadoop.hbase.util.FSTableDescriptors.readTableDescriptor(FSTableDescriptors.java:526)
at
org.apache.hadoop.hbase.util.FSTableDescriptors.createTableDescriptorForTableDirectory(FSTableDescriptors.java:730)
at
org.apache.hadoop.hbase.util.FSTableDescriptors.createTableDescriptor(FSTableDescriptors.java:706)
at
org.apache.hadoop.hbase.util.FSTableDescriptors.createTableDescriptor(FSTableDescriptors.java:693)
at
org.apache.hadoop.hbase.master.MasterFileSystem.checkRootDir(MasterFileSystem.java:471)
at
org.apache.hadoop.hbase.master.MasterFileSystem.createInitialFileSystemLayout(MasterFileSystem.java:145)
at
org.apache.hadoop.hbase.master.MasterFileSystem.<init>(MasterFileSystem.java:125)
at
org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:594)
at org.apache.hadoop.hbase.master.HMaster.access$3(HMaster.java:577)
at org.apache.hadoop.hbase.master.HMaster$1.run(HMaster.java:1470)
at java.lang.Thread.run(Thread.java:745)
{noformat}
So HMaster can not finish initialization and the test is safe too.
> Possible failure of TestHMasterRPCException
> -------------------------------------------
>
> Key: HBASE-13040
> URL: https://issues.apache.org/jira/browse/HBASE-13040
> Project: HBase
> Issue Type: Bug
> Components: test
> Affects Versions: 2.0.0
> Reporter: zhangduo
> Assignee: zhangduo
> Attachments: HBASE-13040.patch
>
>
> When addressing HBASE-13011, TestHMasterRPCException failed twice in
> PreCommit Build.
> I found that the test itself has a problem. We start a HMaster, and then we
> continue calling isMasterRunning and expected a ServerNotRunningYetException.
> But it is possible that when we connect to HMaster, it has already finished
> initialization, and we just get a 'true' response instead of an
> Exception.(Just add a 'Thread.sleep(1000);' after 'HMaster hm = new
> HMaster(conf, cp);', you can get a stable failure).
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