当运行hive查询时，出现了错误，当我执行查询group by语句，它抛出一个错误:
java.sql.SQLException: Error while processing statement: FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.tez.TezTask. Vertex failed, vertexName=Map 8, vertexId=vertex_1530387194612_0030_4_00, diagnostics=[Vertex vertex_1530387194612_0030_4_00 [Map 8] killed/failed due to:ROOT_INPUT_INIT_FAILURE, Vertex Input: tbtbotabel_db2_orc initializer failed, vertex=vertex_1530387194612_0030_4_00 [Map 8], java.io.IOException: java.util.concurrent.ExecutionException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.token.SecretManager$InvalidToken): token (HDFS_DELEGATION_TOKEN token 214816 for hive) can't be found in cache
at org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.getSplits(CombineHiveInputFormat.java:502)
at org.apache.tez.mapreduce.hadoop.MRInputHelpers.generateOldSplits(MRInputHelpers.java:446)
at org.apache.tez.mapreduce.hadoop.MRInputHelpers.generateInputSplitsToMem(MRInputHelpers.java:300)
at org.apache.tez.mapreduce.common.MRInputAMSplitGenerator.initialize(MRInputAMSplitGenerator.java:123)
at org.apache.tez.dag.app.dag.RootInputInitializerManager$InputInitializerCallable$1.run(RootInputInitializerManager.java:278)
at org.apache.tez.dag.app.dag.RootInputInitializerManager$InputInitializerCallable$1.run(RootInputInitializerManager.java:269)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1866)
at org.apache.tez.dag.app.dag.RootInputInitializerManager$InputInitializerCallable.call(RootInputInitializerManager.java:269)
at org.apache.tez.dag.app.dag.RootInputInitializerManager$InputInitializerCallable.call(RootInputInitializerManager.java:253)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.util.concurrent.ExecutionException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.token.SecretManager$InvalidToken): token (HDFS_DELEGATION_TOKEN token 214816 for hive) can't be found in cache
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.getSplits(CombineHiveInputFormat.java:490)
... 14 more
Caused by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.token.SecretManager$InvalidToken): token (HDFS_DELEGATION_TOKEN token 214816 for hive) can't be found in cache
at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1554)
at org.apache.hadoop.ipc.Client.call(Client.java:1498)
at org.apache.hadoop.ipc.Client.call(Client.java:1398)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:233)
at com.sun.proxy.$Proxy13.getListing(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getListing(ClientNamenodeProtocolTranslatorPB.java:620)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:291)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:203)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:185)
at com.sun.proxy.$Proxy14.getListing(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:2143)
at org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:2126)
at org.apache.hadoop.hdfs.DistributedFileSystem.listStatusInternal(DistributedFileSystem.java:919)
at org.apache.hadoop.hdfs.DistributedFileSystem.access$600(DistributedFileSystem.java:114)
at org.apache.hadoop.hdfs.DistributedFileSystem$22.doCall(DistributedFileSystem.java:985)
at org.apache.hadoop.hdfs.DistributedFileSystem$22.doCall(DistributedFileSystem.java:981)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.listStatus(DistributedFileSystem.java:981)
at org.apache.hadoop.hive.ql.io.AcidUtils.isAcid(AcidUtils.java:459)
at org.apache.hadoop.hive.ql.io.orc.OrcInputFormat.shouldSkipCombine(OrcInputFormat.java:179)
at
由于在缓存中没有找到HDFS委托令牌而导致查询失败，并且已被正在运行的作业取消。另一个已经开始使用该委托令牌的作业发现HDFS委托令牌已经被取消，因此查询失败，出现相同的错误消息。
要恢复这个功能，您需要添加属性
tez.cancel.delegation.tokens.on.completion=false
通过Ambari添加自定义tez属性
来源：oschina
链接：https://my.oschina.net/u/1468583/blog/3021600