[ https://issues.apache.org/jira/browse/HIVE-18284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17204451#comment-17204451 ]
Syed Shameerur Rahman commented on HIVE-18284: ---------------------------------------------- [~jcamachorodriguez] Could you please review the PR? > NPE when inserting data with 'distribute by' clause with dynpart sort > optimization > ---------------------------------------------------------------------------------- > > 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 > Reporter: Aki Tanaka > Assignee: Syed Shameerur Rahman > Priority: Major > Labels: pull-request-available > Time Spent: 1h 50m > Remaining Estimate: 0h > > A Null Pointer Exception occurs when inserting data with 'distribute by' > clause. The following snippet query reproduces this issue: > *(non-vectorized , non-llap mode)* > {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.vectorized.execution.enabled=false; > set hive.optimize.sort.dynamic.partition=true; > 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} -- This message was sent by Atlassian Jira (v8.3.4#803005)