[jira] [Created] (HIVE-21865) Add verification for Tez engine before starting Tez sessions

[Oleksiy Sayankin (JIRA)]

Oleksiy Sayankin created HIVE-21865:
---------------------------------------

             Summary: Add verification for Tez engine before starting Tez 
sessions
                 Key: HIVE-21865
                 URL: https://issues.apache.org/jira/browse/HIVE-21865
             Project: Hive
          Issue Type: Bug
            Reporter: Oleksiy Sayankin
            Assignee: Oleksiy Sayankin


Here is the log of starting HS2 when engine is MR:

{code}
2019-06-12T06:08:05,115  WARN [main] server.HiveServer2: Error starting 
HiveServer2 on attempt 1, will retry in 60000ms
java.lang.NoClassDefFoundError: org/apache/tez/dag/api/TezConfiguration
        at 
org.apache.hadoop.hive.ql.exec.tez.TezSessionPoolSession$AbstractTriggerValidator.startTriggerValidator(TezSessionPoolSession.java:74)
 
        at 
org.apache.hadoop.hive.ql.exec.tez.TezSessionPoolManager.initTriggers(TezSessionPoolManager.java:207)
        at 
org.apache.hadoop.hive.ql.exec.tez.TezSessionPoolManager.startPool(TezSessionPoolManager.java:114)
 
        at 
org.apache.hive.service.server.HiveServer2.initAndStartTezSessionPoolManager(HiveServer2.java:860)
 
        at 
org.apache.hive.service.server.HiveServer2.startOrReconnectTezSessions(HiveServer2.java:843)
        at 
org.apache.hive.service.server.HiveServer2.start(HiveServer2.java:766)
        at 
org.apache.hive.service.server.HiveServer2.startHiveServer2(HiveServer2.java:1058)
 
        at 
org.apache.hive.service.server.HiveServer2.access$1600(HiveServer2.java:144) 
        at 
org.apache.hive.service.server.HiveServer2$StartOptionExecutor.execute(HiveServer2.java:1326)
 
        at 
org.apache.hive.service.server.HiveServer2.main(HiveServer2.java:1170) 
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 
        at java.lang.reflect.Method.invoke(Method.java:498) 
        at org.apache.hadoop.util.RunJar.run(RunJar.java:323) 
        at org.apache.hadoop.util.RunJar.main(RunJar.java:236) 
Caused by: java.lang.ClassNotFoundException: 
org.apache.tez.dag.api.TezConfiguration
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381) 
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338) 
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
        ... 16 more
{code}

HS2 starts correctly but the exception above annoys customer. 



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