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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