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https://issues.apache.org/jira/browse/HIVE-18284?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lynch Lee reassigned HIVE-18284:
--------------------------------
Assignee: Lynch Lee
> NPE when inserting data with 'distribute by' clause
> ---------------------------------------------------
>
> Key: HIVE-18284
> URL: https://issues.apache.org/jira/browse/HIVE-18284
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 2.3.1, 2.3.2
> Environment: EMR
> Reporter: Aki Tanaka
> Assignee: Lynch Lee
> Priority: Major
>
> A Null Pointer Exception occurs when inserting data with 'distribute by'
> clause. The following snippet query reproduces this issue:
> {code:java}
> create table table1 (col1 string, datekey int);
> insert into table1 values ('ROW1', 1), ('ROW2', 2), ('ROW3', 1);
> create table table2 (col1 string) partitioned by (datekey int);
> set hive.exec.dynamic.partition.mode=nonstrict;
> insert into table table2
> PARTITION(datekey)
> select col1,
> datekey
> from table1
> distribute by datekey ;
> {code}
> I could run the insert query without the error if I remove Distribute By or
> use Cluster By clause.
> It seems that the issue happens because Distribute By does not guarantee
> clustering or sorting properties on the distributed keys.
> FileSinkOperator removes the previous fsp. FileSinkOperator will remove the
> previous fsp which might be re-used when we use Distribute By.
> https://github.com/apache/hive/blob/branch-2.3/ql/src/java/org/apache/hadoop/hive/ql/exec/FileSinkOperator.java#L972
> The following stack trace is logged.
> {code:java}
> Vertex failed, vertexName=Reducer 2, vertexId=vertex_1513111717879_0056_1_01,
> diagnostics=[Task failed, taskId=task_1513111717879_0056_1_01_000000,
> diagnostics=[TaskAttempt 0 failed, info=[Error: Error while running task (
> failure ) :
> attempt_1513111717879_0056_1_01_000000_0:java.lang.RuntimeException:
> org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while
> processing row (tag=0) {"key":{},"value":{"_col0":"ROW3","_col1":1}}
> at
> org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:211)
> at
> org.apache.hadoop.hive.ql.exec.tez.TezProcessor.run(TezProcessor.java:168)
> at
> org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:370)
> at
> org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:73)
> at
> org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:61)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1698)
> at
> org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:61)
> at
> org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:37)
> at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime
> Error while processing row (tag=0)
> {"key":{},"value":{"_col0":"ROW3","_col1":1}}
> at
> org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource$GroupIterator.next(ReduceRecordSource.java:365)
> at
> org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource.pushRecord(ReduceRecordSource.java:250)
> at
> org.apache.hadoop.hive.ql.exec.tez.ReduceRecordProcessor.run(ReduceRecordProcessor.java:317)
> at
> org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:185)
> ... 14 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.exec.FileSinkOperator.process(FileSinkOperator.java:762)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:897)
> at
> org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:95)
> at
> org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource$GroupIterator.next(ReduceRecordSource.java:356)
> ... 17 more
> {code}
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