[jira] [Created] (HIVE-8751) Null Pointer Exception when counter is used for stats during inserting overwrite partitioned tables [Spark Branch]

["Na Yang (JIRA)" <ji...@apache.org>]

Na Yang created HIVE-8751:
-----------------------------

             Summary: Null Pointer Exception when counter is used for stats during inserting overwrite partitioned tables [Spark Branch]
                 Key: HIVE-8751
                 URL: https://issues.apache.org/jira/browse/HIVE-8751
             Project: Hive
          Issue Type: Bug
            Reporter: Na Yang


The following quries cause NullPointerException
{noformat}
set hive.stats.dbclass=counter;
set hive.stats.autogather=true;
set hive.exec.dynamic.partition.mode=nonstrict;

create table dummy (key string, value string) partitioned by (ds string, hr string);
insert overwrite table dummy partition (ds='10',hr='11') select * from src;
{noformat}

Here is the stacktrace
{noformat}
2014-11-05 15:30:42,621 ERROR [main] exec.Task (SparkTask.java:execute(116)) - Failed to execute spark task.
java.lang.NullPointerException
	at org.apache.hadoop.hive.ql.exec.spark.SparkTask.getRequiredCounterPrefix(SparkTask.java:235)
	at org.apache.hadoop.hive.ql.exec.spark.SparkTask.execute(SparkTask.java:103)
	at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:161)
	at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:85)
	at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1644)
	at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1404)
	at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1216)
	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1043)
	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1033)
	at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:247)
	at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:199)
	at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:410)
	at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:783)
	at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:677)
	at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:616)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.spark.SparkTask
{noformat}

The cause of this NullPointerException is that the SparkTask tries to get table partition info to set RequiredCounterPrefix before data are actually inserted to the partitioned table. Therefore, a null partition info is returned.



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