Eugene Koifman created HIVE-18606:
-------------------------------------

             Summary: CTAS on empty table throws NPE from 
org.apache.hadoop.hive.ql.exec.MoveTask
                 Key: HIVE-18606
                 URL: https://issues.apache.org/jira/browse/HIVE-18606
             Project: Hive
          Issue Type: Bug
            Reporter: Eugene Koifman


{noformat}
@Test
public void testCtasEmpty() throws Exception {
  MetastoreConf.setBoolVar(hiveConf, 
MetastoreConf.ConfVars.CREATE_TABLES_AS_ACID, true);
  runStatementOnDriver("create table myctas stored as ORC as" +
      " select a, b from " + Table.NONACIDORCTBL);
  List<String> rs = runStatementOnDriver("select ROW__ID, a, b, 
INPUT__FILE__NAME" +
      " from myctas order by ROW__ID");
}
{noformat}
{noformat}
2018-02-01T19:08:52,813 INFO  [HiveServer2-Background-Pool: Thread-463]: 
metastore.HiveMetaStore (HiveMetaStore.java:logInfo(822)) - 114: Done cleaning 
up thread local RawStore
2018-02-01T19:08:52,813 INFO  [HiveServer2-Background-Pool: Thread-463]: 
HiveMetaStore.audit (HiveMetaStore.java:logAuditEvent(305)) - ugi=hive 
ip=unknown-ip-addr      cmd=Done cleaning up thread local RawStore
2018-02-01T19:08:52,815 ERROR [HiveServer2-Background-Pool: Thread-463]: 
exec.Task (SessionState.java:printError(1228)) - Failed with exception null
java.lang.NullPointerException
        at org.apache.hadoop.hive.ql.metadata.Hive.moveAcidFiles(Hive.java:3816)
        at org.apache.hadoop.hive.ql.exec.MoveTask.execute(MoveTask.java:298)
        at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:205)
        at 
org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:97)
        at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:2267)
        at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1919)
        at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1651)
        at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1395)
        at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1388)
        at 
org.apache.hive.service.cli.operation.SQLOperation.runQuery(SQLOperation.java:253)
        at 
org.apache.hive.service.cli.operation.SQLOperation.access$700(SQLOperation.java:92)
        at 
org.apache.hive.service.cli.operation.SQLOperation$BackgroundWork$1.run(SQLOperation.java:345)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1965)
        at 
org.apache.hive.service.cli.operation.SQLOperation$BackgroundWork.run(SQLOperation.java:358)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)

2018-02-01T19:08:52,815 ERROR [HiveServer2-Background-Pool: Thread-463]: 
ql.Driver (SessionState.java:printError(1228)) - FAILED: Execution Error, 
return code 1 from {noformat}
 



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