[ https://issues.apache.org/jira/browse/HADOOP-12253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ajith S reassigned HADOOP-12253: -------------------------------- Assignee: Ajith S > ViewFileSystem getFileStatus java.lang.ArrayIndexOutOfBoundsException: 0 > ------------------------------------------------------------------------ > > Key: HADOOP-12253 > URL: https://issues.apache.org/jira/browse/HADOOP-12253 > Project: Hadoop Common > Issue Type: Bug > Components: fs > Affects Versions: 2.6.0 > Environment: hadoop 2.6.0 hive 1.1.0 tez0.7 cenos6.4 > Reporter: tangjunjie > Assignee: Ajith S > > When I enable hdfs federation.I run a query on hive on tez. Then it occur a > exception: > 8.784 PM WARN org.apache.hadoop.security.UserGroupInformation No > groups available for user tangjijun > 3:12:28.784 PM ERROR org.apache.hadoop.hive.ql.exec.Task > Failed to execute tez graph. > java.lang.ArrayIndexOutOfBoundsException: 0 > at > org.apache.hadoop.fs.viewfs.ViewFileSystem$InternalDirOfViewFs.getFileStatus(ViewFileSystem.java:771) > at > org.apache.hadoop.fs.viewfs.ViewFileSystem.getFileStatus(ViewFileSystem.java:359) > at > org.apache.tez.client.TezClientUtils.checkAncestorPermissionsForAllUsers(TezClientUtils.java:955) > at > org.apache.tez.client.TezClientUtils.setupTezJarsLocalResources(TezClientUtils.java:184) > at > org.apache.tez.client.TezClient.getTezJarResources(TezClient.java:787) > at org.apache.tez.client.TezClient.start(TezClient.java:337) > at > org.apache.hadoop.hive.ql.exec.tez.TezSessionState.open(TezSessionState.java:191) > at > org.apache.hadoop.hive.ql.exec.tez.TezTask.updateSession(TezTask.java:234) > at org.apache.hadoop.hive.ql.exec.tez.TezTask.execute(TezTask.java:136) > at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:160) > at > org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:88) > at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1640) > at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1399) > at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1183) > at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1049) > at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1044) > at > org.apache.hive.service.cli.operation.SQLOperation.runQuery(SQLOperation.java:144) > at > org.apache.hive.service.cli.operation.SQLOperation.access$100(SQLOperation.java:69) > at > org.apache.hive.service.cli.operation.SQLOperation$1$1.run(SQLOperation.java:196) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:415) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671) > at > org.apache.hive.service.cli.operation.SQLOperation$1.run(SQLOperation.java:208) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > at java.util.concurrent.FutureTask.run(FutureTask.java:262) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > at java.lang.Thread.run(Thread.java:745) > I digging into the issue,I found the code snippet in ViewFileSystem.java as > follows: > @Override > public FileStatus getFileStatus(Path f) throws IOException { > checkPathIsSlash(f); > return new FileStatus(0, true, 0, 0, creationTime, creationTime, > PERMISSION_555, ugi.getUserName(), ugi.getGroupNames()[0], > new Path(theInternalDir.fullPath).makeQualified( > myUri, ROOT_PATH)); > } > If the node in cluster haven't creat user like > tangjijun,ugi.getGroupNames()[0] will throw > ArrayIndexOutOfBoundsException.Because no user mean no group. > I create user tangjijun on that node. Then the job was executed normally. > I think this code should check ugi.getGroupNames() is empty.When it is empty > ,then print some log. Not to throw exception. -- This message was sent by Atlassian JIRA (v6.3.4#6332)