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From "yogesh bedekar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7623) Username is not available for HConnectionManager to use in HConnectionKey
Date Tue, 09 Jul 2013 05:21:49 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13702929#comment-13702929
] 

yogesh bedekar commented on HBASE-7623:
---------------------------------------

Hi,

Thanks for the reply.

It will be great if you can help me solve the following issue :-

Exception creating HBase connection: java.lang.ClassNotFoundException: 
org.apache.hadoop.hbase.ipc.WritableRpcEngine not found from bundle XXX
Stack trace: java.lang.RuntimeException: 
java.lang.ClassNotFoundException: 
org.apache.hadoop.hbase.ipc.WritableRpcEngine not found from bundle XXX
     at 
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:867)
     at 
org.apache.hadoop.hbase.ipc.HBaseRPC.getProtocolEngine(HBaseRPC.java:99)
     at 
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.ensureZookeeperTrackers(HConnectionManager.java:630)
     at 
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:882)
     at 
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:857)
     at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:233)
     at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:173)
     at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:132)
     at 
com.oracle.cep.hbase.impl.HBaseConnection.<init>(HBaseConnection.java:103)
     at 
com.oracle.cep.hbase.impl.HBaseDataSource.getConnection(HBaseDataSource.java:91)
     at 
com.oracle.cep.processor.cql.impl.CQLExternalDataSourceDelegate.getConnection(CQLExternalDataSourceDelegate.java:256)
     at oracle.cep.interfaces.input.ExtSource.start(ExtSource.java:123)
     at 
oracle.cep.execution.operators.RelSource.initialize(RelSource.java:500)
     at 
oracle.cep.planmgr.codegen.RelSourceFactory.setupExecOpt(RelSourceFactory.java:317)
     at 
oracle.cep.planmgr.codegen.ExecOptFactory.instantiate(ExecOptFactory.java:234)
     at 
oracle.cep.planmgr.codegen.RelSourceFactory.instantiate(RelSourceFactory.java:119)
     at oracle.cep.planmgr.codegen.OptInst.instOp(OptInst.java:139)
     at 
oracle.cep.planmgr.codegen.CodeGenHelper.instantiate(CodeGenHelper.java:121)
     at oracle.cep.planmgr.PlanManager.instantiate(PlanManager.java:1315)
     at oracle.cep.metadata.QueryManager.instantiate(QueryManager.java:2029)
     at oracle.cep.metadata.QueryManager.startQuery(QueryManager.java:572)
     at 
oracle.cep.metadata.QueryManager.startNamedQuery(QueryManager.java:358)
     at 
oracle.cep.server.CommandDriver.QueryRefNodeDriver.execute(QueryRefNodeDriver.java:61)

I am using an osgi bundle AAA in which I have embedded the 
hbase-0.94.8.jar and hadoop-core-1.0.4.jar.
I see that the hbase-0.94.8.jar does contain the class 
org.apache.hadoop.hbase.ipc.WritableRpcEngine.
I have added this bundle AAA as a dependency in my client maven project 
bundle XXX.

Rgds,
Yogesh

-- 
Yogesh Bedekar
Technical Lead
Oracle Event Processing
Prestige Lexington Towers
Bangalore


                
> Username is not available for HConnectionManager to use in HConnectionKey
> -------------------------------------------------------------------------
>
>                 Key: HBASE-7623
>                 URL: https://issues.apache.org/jira/browse/HBASE-7623
>             Project: HBase
>          Issue Type: Improvement
>          Components: Client, security
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>            Priority: Minor
>         Attachments: trunk-7623.patch
>
>
> Sometimes, some non-IOException prevents User.getCurrent() to get a username.  It makes
it impossible to create a HConnection.  We should catch all exception here:
> {noformat}
>       try {
>         User currentUser = User.getCurrent();
>         if (currentUser != null) {
>           username = currentUser.getName();
>         }
>       } catch (IOException ioe) {
>         LOG.warn("Error obtaining current user, skipping username in HConnectionKey",
>             ioe);
>       }
> {noformat}
> Not just IOException, so that client can move forward.

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