[HIVE-5061] Row sampling throws NPE when used in sub-query

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.12.0
• Component/s: Query Processor
• Assignee: Navis Ryu
• Reporter: Navis Ryu
• Created: 12/Aug/13 06:13
• Updated: 15/Oct/13 23:30
• Resolved: 14/Aug/13 16:44

Description

select * from (select * from src TABLESAMPLE (1 ROWS)) x;

ava.lang.NullPointerException
	at org.apache.hadoop.hive.ql.parse.SplitSample.getTargetSize(SplitSample.java:103)
	at org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.sampleSplits(CombineHiveInputFormat.java:487)
	at org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.getSplits(CombineHiveInputFormat.java:405)
	at org.apache.hadoop.mapred.JobClient.writeOldSplits(JobClient.java:1025)
	at org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:1017)
	at org.apache.hadoop.mapred.JobClient.access$600(JobClient.java:174)
	at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:928)
	at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:881)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:396)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1278)
	at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:881)
	at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:855)
	at org.apache.hadoop.hive.ql.exec.mr.ExecDriver.execute(ExecDriver.java:426)
	at org.apache.hadoop.hive.ql.exec.mr.MapRedTask.execute(MapRedTask.java:144)
	at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:151)
	at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:65)
	at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1424)
	at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1204)
	at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1009)
	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:878)
	at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:259)
	at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:216)
	at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:413)
	at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:781)
	at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:675)
	at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:614)