CombineFileInputFormat fails if mapred.job.tracker is set to local with a
sub-query
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Key: HIVE-2737
URL: https://issues.apache.org/jira/browse/HIVE-2737
Project: Hive
Issue Type: Bug
Affects Versions: 0.8.0
Reporter: Esteban Gutierrez
If the CombineFileInputFormat and mapred.job.tracker=local are used together,
the CombineFileInputFormat throws a java.io.FileNotFoundException if the query
statment contains a sub-query:
{code}
hive> select count(*) from (select count(*), a from hivetest2 group by a) x;
Total MapReduce jobs = 2
Launching Job 1 out of 2
Number of reduce tasks not specified. Estimated from input data size: 1
In order to change the average load for a reducer (in bytes):
set hive.exec.reducers.bytes.per.reducer=<number>
In order to limit the maximum number of reducers:
set hive.exec.reducers.max=<number>
In order to set a constant number of reducers:
set mapred.reduce.tasks=<number>
Execution log at:
/tmp/esteban/esteban_20120119134040_5d105797-1444-43ce-8ca8-3b4735b7a70d.log
Job running in-process (local Hadoop)
2012-01-19 13:40:49,618 null map = 100%, reduce = 100%
Ended Job = job_local_0001
Launching Job 2 out of 2
Number of reduce tasks determined at compile time: 1
In order to change the average load for a reducer (in bytes):
set hive.exec.reducers.bytes.per.reducer=<number>
In order to limit the maximum number of reducers:
set hive.exec.reducers.max=<number>
In order to set a constant number of reducers:
set mapred.reduce.tasks=<number>
Execution log at:
/tmp/esteban/esteban_20120119134040_5d105797-1444-43ce-8ca8-3b4735b7a70d.log
java.io.FileNotFoundException: File does not exist:
/tmp/esteban/hive_2012-01-19_13-40-45_277_494412568828098242/-mr-10002/000000_0
at
org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:546)
at
org.apache.hadoop.mapred.lib.CombineFileInputFormat$OneFileInfo.<init>(CombineFileInputFormat.java:462)
at
org.apache.hadoop.mapred.lib.CombineFileInputFormat.getMoreSplits(CombineFileInputFormat.java:256)
at
org.apache.hadoop.mapred.lib.CombineFileInputFormat.getSplits(CombineFileInputFormat.java:212)
at
org.apache.hadoop.hive.shims.Hadoop20SShims$CombineFileInputFormatShim.getSplits(Hadoop20SShims.java:347)
at
org.apache.hadoop.hive.shims.Hadoop20SShims$CombineFileInputFormatShim.getSplits(Hadoop20SShims.java:313)
at
org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.getSplits(CombineHiveInputFormat.java:377)
at org.apache.hadoop.mapred.JobClient.writeOldSplits(JobClient.java:971)
at org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:963)
at org.apache.hadoop.mapred.JobClient.access$500(JobClient.java:170)
at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:880)
at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:833)
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:1127)
at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:833)
at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:807)
at org.apache.hadoop.hive.ql.exec.ExecDriver.execute(ExecDriver.java:671)
at org.apache.hadoop.hive.ql.exec.ExecDriver.main(ExecDriver.java:1092)
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:186)
Job Submission failed with exception 'java.io.FileNotFoundException(File does
not exist:
/tmp/esteban/hive_2012-01-19_13-40-45_277_494412568828098242/-mr-10002/000000_0)'
{code}
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