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Posted to issues@hbase.apache.org by "Peter Somogyi (Jira)" <ji...@apache.org> on 2023/07/26 12:26:00 UTC
[jira] [Assigned] (HBASE-27991) [hbase-examples] MultiThreadedClientExample throws java.lang.ClassCastException
[ https://issues.apache.org/jira/browse/HBASE-27991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Peter Somogyi reassigned HBASE-27991:
-------------------------------------
Assignee: Nikita Pande
> [hbase-examples] MultiThreadedClientExample throws java.lang.ClassCastException
> -------------------------------------------------------------------------------
>
> Key: HBASE-27991
> URL: https://issues.apache.org/jira/browse/HBASE-27991
> Project: HBase
> Issue Type: Bug
> Reporter: Nikita Pande
> Assignee: Nikita Pande
> Priority: Minor
>
> Tried using run() method call of [https://github.com/apache/hbase/blob/master/hbase-examples/src/main/java/org/apache/hadoop/hbase/client/example/MultiThreadedClientExample.java|https://github.com/apache/hbase/blob/master/hbase-examples/src/main/java/org/apache/hadoop/hbase/client/example/MultiThreadedClientExample.java.] Following the stack trace of error during runtime
> {code:java}
> Exception in thread "main" java.io.IOException: java.lang.reflect.UndeclaredThrowableException
> at org.apache.hadoop.hbase.client.ConnectionFactory.lambda$createConnection$1(ConnectionFactory.java:235)
> at org.apache.hadoop.hbase.trace.TraceUtil.trace(TraceUtil.java:216)
> at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:218)
> at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:160)
> at org.apache.hadoop.hbase.client.example.MultiThreadedClientExample.run(MultiThreadedClientExample.java:136)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
> at <classname>.runMultiThreadedRWOps(xxxxxx)
> at <classname>.main(xxxxxx)
> Caused by: java.lang.reflect.UndeclaredThrowableException
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1780)
> at org.apache.hadoop.hbase.security.User$SecureHadoopUser.runAs(User.java:328)
> at org.apache.hadoop.hbase.client.ConnectionFactory.lambda$createConnection$1(ConnectionFactory.java:232)
> ... 8 more
> Caused by: java.lang.reflect.InvocationTargetException
> at sun.reflect.GeneratedConstructorAccessor16.newInstance(Unknown Source)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at org.apache.hadoop.hbase.client.ConnectionFactory.lambda$null$0(ConnectionFactory.java:233)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1762)
> ... 10 more
> Caused by: java.lang.ClassCastException: java.util.concurrent.ForkJoinPool cannot be cast to java.util.concurrent.ThreadPoolExecutor
> at org.apache.hadoop.hbase.client.ConnectionImplementation.<init>(ConnectionImplementation.java:283)
> at org.apache.hadoop.hbase.client.ConnectionImplementation.<init>(ConnectionImplementation.java:270)
> ... 17 more{code}
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