HiveServer2啟動報TezConfiguration類NoClassDefFoundError錯誤

錯誤信息如下：

2021-01-03 20:11:26,355 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:839)
	at org.apache.hive.service.server.HiveServer2.startOrReconnectTezSessions(HiveServer2.java:822)
	at org.apache.hive.service.server.HiveServer2.start(HiveServer2.java:745)
	at org.apache.hive.service.server.HiveServer2.startHiveServer2(HiveServer2.java:1037)
	at org.apache.hive.service.server.HiveServer2.access$1600(HiveServer2.java:140)
	at org.apache.hive.service.server.HiveServer2$StartOptionExecutor.execute(HiveServer2.java:1305)
	at org.apache.hive.service.server.HiveServer2.main(HiveServer2.java:1149)
	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:318)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:232)
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:335)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 16 more

 

雖然只是個Warn，但是這老長一段錯，強迫症看不下去啊！

看起來像是缺少jar包，不過往上翻發現了一段很有意思的話：

2021-01-03 20:11:26,328 INFO  [main] server.HiveServer2: HS2 interactive HA not enabled. Starting tez sessions..

 

不對啊，我本來就沒打算整合Tes的啊，於是搜索這句話發現，hive-site.xml添加以下配置可以解決：

<!-- hiveserver2的高可用參數，開啟此參數可以提高hiveserver2的啟動速度 -->

<property>
    <name>hive.server2.active.passive.ha.enable</name>
    <value>true</value>
</property>

 

再次啟動HiveServer2，問題解決，但是為啥呢？到hive官網去沒有找到這個配置項。Mark以下吧，日后再說。