Caused by: java.lang.RuntimeException: Reduce operator initialization failed at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordProcessor.init(ReduceRecordProcessor.java:146) at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:162) ... 13 more Caused by: java.lang.NullPointerException at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.getStandardObjectInspector(ObjectInspectorUtils.java:127) at org.apache.hadoop.hive.ql.exec.GroupByOperator.initializeOp(GroupByOperator.java:329) at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:385) at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:469) at org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:425) at org.apache.hadoop.hive.ql.exec.SelectOperator.initializeOp(SelectOperator.java:65) at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:385) at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:469) at org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:425) at org.apache.hadoop.hive.ql.exec.SelectOperator.initializeOp(SelectOperator.java:65) at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:385) at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:469) at org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:425) at org.apache.hadoop.hive.ql.exec.AbstractMapJoinOperator.initializeOp(AbstractMapJoinOperator.java:88) at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.initializeOp(CommonMergeJoinOperator.java:89) at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:385) at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordProcessor.init(ReduceRecordProcessor.java:116)