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https://issues.apache.org/jira/browse/HIVE-9123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ashutosh Chauhan resolved HIVE-9123.
------------------------------------
Resolution: Cannot Reproduce
> Query with join fails with NPE when using join auto conversion
> --------------------------------------------------------------
>
> Key: HIVE-9123
> URL: https://issues.apache.org/jira/browse/HIVE-9123
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.13.1
> Environment: CDH5 with Hive 0.13.1
> Reporter: Kamil Gorlo
>
> I have two simple tables:
> desc kgorlo_comm;
> | col_name | data_type | comment |
> | id | bigint | |
> | dest_id | bigint | |
> desc kgorlo_log;
> | col_name | data_type | comment |
> | id | bigint | |
> | dest_id | bigint | |
> | tstamp | bigint | |
> With data:
> select * from kgorlo_comm;
> | kgorlo_comm.id | kgorlo_comm.dest_id |
> | 1 | 2 |
> | 2 | 1 |
> | 1 | 3 |
> | 2 | 3 |
> | 3 | 5 |
> | 4 | 5 |
> select * from kgorlo_log;
> | kgorlo_log.id | kgorlo_log.dest_id | kgorlo_log.tstamp |
> | 1 | 2 | 0 |
> | 1 | 3 | 0 |
> | 1 | 5 | 0 |
> | 3 | 1 | 0 |
> Following query fails in second stage of execution:
> bq. select v.id, v.dest_id from kgorlo_log v join (select id, dest_id,
> count(*) as wiad from kgorlo_comm group by id, dest_id)com1 on com1.id=v.id
> and com1.dest_id=v.dest_id;
> with following exception:
> {quote}
> 2014-12-16 17:09:17,629 ERROR [uber-SubtaskRunner]
> org.apache.hadoop.hive.ql.exec.MapJoinOperator: Unxpected exception: null
> java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.exec.MapJoinOperator.getRefKey(MapJoinOperator.java:198)
> at
> org.apache.hadoop.hive.ql.exec.MapJoinOperator.computeMapJoinKey(MapJoinOperator.java:186)
> at
> org.apache.hadoop.hive.ql.exec.MapJoinOperator.processOp(MapJoinOperator.java:216)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:796)
> at
> org.apache.hadoop.hive.ql.exec.TableScanOperator.processOp(TableScanOperator.java:92)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:796)
> at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:540)
> at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:177)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:450)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
> at
> org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.runSubtask(LocalContainerLauncher.java:370)
> at
> org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.runTask(LocalContainerLauncher.java:295)
> at
> org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.access$200(LocalContainerLauncher.java:181)
> at
> org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler$1.run(LocalContainerLauncher.java:224)
> at java.util.concurrent.Executors$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$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> 2014-12-16 17:09:17,659 FATAL [uber-SubtaskRunner]
> org.apache.hadoop.hive.ql.exec.mr.ExecMapper:
> org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while
> processing row {"_col0":1,"_col1":2}
> at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:550)
> at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:177)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:450)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
> at
> org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.runSubtask(LocalContainerLauncher.java:370)
> at
> org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.runTask(LocalContainerLauncher.java:295)
> at
> org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.access$200(LocalContainerLauncher.java:181)
> at
> org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler$1.run(LocalContainerLauncher.java:224)
> at java.util.concurrent.Executors$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)
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Unxpected
> exception: null
> at
> org.apache.hadoop.hive.ql.exec.MapJoinOperator.processOp(MapJoinOperator.java:254)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:796)
> at
> org.apache.hadoop.hive.ql.exec.TableScanOperator.processOp(TableScanOperator.java:92)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:796)
> at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:540)
> ... 13 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.exec.MapJoinOperator.getRefKey(MapJoinOperator.java:198)
> at
> org.apache.hadoop.hive.ql.exec.MapJoinOperator.computeMapJoinKey(MapJoinOperator.java:186)
> at
> org.apache.hadoop.hive.ql.exec.MapJoinOperator.processOp(MapJoinOperator.java:216)
> ... 17 more
> {quote}
> When I set hive.auto.convert.join=false everything works.
> Here are explains with this variable turned off and on:
> https://gist.github.com/kgs/20db747c8d81d94ac20e
> https://gist.github.com/kgs/63bc1fc148354b98a63e
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