Daniel Dai created PIG-3267:
-------------------------------
Summary: HCatStorer fail in limit query
Key: PIG-3267
URL: https://issues.apache.org/jira/browse/PIG-3267
Project: Pig
Issue Type: Bug
Affects Versions: 0.9.2, 0.10.1, 0.11.1
Reporter: Daniel Dai
Assignee: Daniel Dai
Fix For: 0.12
The following query fail:
{code}
data = LOAD 'student.txt' as (name:chararray, age:int, gpa:double);
data_limited = limit data 10;
samples = foreach data_limited generate age as number;
store samples into 'samples' using
org.apache.hcatalog.pig.HCatStorer('part_dt=20130101T010000T36');
{code}
Error happens before launching the second job. Error message:
{code}
Message: org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory
hdfs://localhost:8020/user/hive/warehouse/samples/part_dt=20130101T010000T36
already exists
at
org.apache.hadoop.mapred.FileOutputFormat.checkOutputSpecs(FileOutputFormat.java:121)
at
org.apache.hcatalog.mapreduce.FileOutputFormatContainer.checkOutputSpecs(FileOutputFormatContainer.java:135)
at
org.apache.hcatalog.mapreduce.HCatBaseOutputFormat.checkOutputSpecs(HCatBaseOutputFormat.java:72)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.checkOutputSpecsHelper(PigOutputFormat.java:207)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.checkOutputSpecs(PigOutputFormat.java:188)
at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:887)
at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:850)
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:1121)
at
org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:850)
at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:824)
at org.apache.hadoop.mapred.jobcontrol.Job.submit(Job.java:378)
at
org.apache.hadoop.mapred.jobcontrol.JobControl.startReadyJobs(JobControl.java:247)
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.pig.backend.hadoop20.PigJobControl.mainLoopAction(PigJobControl.java:157)
at
org.apache.pig.backend.hadoop20.PigJobControl.run(PigJobControl.java:134)
at java.lang.Thread.run(Thread.java:680)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher$1.run(MapReduceLauncher.java:257)
{code}
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