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https://issues.apache.org/jira/browse/PIG-569?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12665537#action_12665537
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Richard Spring commented on PIG-569:
------------------------------------
I've come across a similar issue when trying to load subdirectories using globs:
The command works fine via the shell:
hadoop dfs -ls /data/2008/{11/13,11/15}/14/video_impressions
But the following exception occurs when run via Pig if one of the globs does
not return any files.:
impressions = LOAD '/data/2008/{11/13,11/15}/14/video_impressions'....;
Exception in thread "Thread-6" java.lang.NullPointerException
at org.apache.hadoop.fs.FileSystem.globStatus(FileSystem.java:873)
at org.apache.hadoop.fs.FileSystem.globStatus(FileSystem.java:846)
at
org.apache.pig.backend.hadoop.datastorage.HDataStorage.asCollection(HDataStorage.java:215)
at
org.apache.pig.backend.hadoop.datastorage.HDataStorage.asCollection(HDataStorage.java:40)
at
org.apache.pig.impl.io.FileLocalizer.globMatchesFiles(FileLocalizer.java:486)
at
org.apache.pig.impl.io.FileLocalizer.fileExists(FileLocalizer.java:455)
at
org.apache.pig.backend.executionengine.PigSlicer.validate(PigSlicer.java:114)
at
org.apache.pig.impl.io.ValidatingInputFileSpec.validate(ValidatingInputFileSpec.java:59)
at
org.apache.pig.impl.io.ValidatingInputFileSpec.<init>(ValidatingInputFileSpec.java:44)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.getSplits(PigInputFormat.java:200)
at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:782)
at org.apache.hadoop.mapred.jobcontrol.Job.submit(Job.java:378)
at
org.apache.hadoop.mapred.jobcontrol.JobControl.startReadyJobs(JobControl.java:247)
at
org.apache.hadoop.mapred.jobcontrol.JobControl.run(JobControl.java:279)
at java.lang.Thread.run(Unknown Source)
> Inconsistency with Hadoop in Pig load statements involving globs with
> subdirectories
> ------------------------------------------------------------------------------------
>
> Key: PIG-569
> URL: https://issues.apache.org/jira/browse/PIG-569
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: types_branch
> Environment: FC Linux x86/64, Pig revision 724576
> Reporter: Kevin Weil
> Fix For: types_branch
>
>
> Pig cannot handle LOAD statements with Hadoop globs where the globs have
> subdirectories. For example,
> A = LOAD 'dir/{dir1/subdir1,dir2/subdir2,dir3/subdir3}' USING ...
> A similar statement in Hadoop, hadoop dfs -ls
> dir/{dir1/subdir1,dir2/subdir2,dir3/subdir3}, does work correctly.
> The output of running the above load statement in pig, built from svn
> revision 724576, is:
> 2008-12-17 12:02:28,480 [main] INFO
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher
> - 0% complete
> 2008-12-17 12:02:28,480 [main] ERROR
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher
> - Map reduce job failed
> 2008-12-17 12:02:28,480 [main] ERROR
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher
> - java.io.IOException: Unable to get collect for pattern
> dir/{dir1/subdir1,dir2/subdir2,dir3/subdir3}} [Failed to obtain glob for
> dir/{dir1/subdir1,dir2/subdir2,dir3/subdir3}]
> at
> org.apache.pig.backend.hadoop.datastorage.HDataStorage.asCollection(HDataStorage.java:231)
> at
> org.apache.pig.backend.hadoop.datastorage.HDataStorage.asCollection(HDataStorage.java:40)
> at
> org.apache.pig.impl.io.FileLocalizer.globMatchesFiles(FileLocalizer.java:486)
> at
> org.apache.pig.impl.io.FileLocalizer.fileExists(FileLocalizer.java:455)
> at
> org.apache.pig.backend.executionengine.PigSlicer.validate(PigSlicer.java:108)
> at
> org.apache.pig.impl.io.ValidatingInputFileSpec.validate(ValidatingInputFileSpec.java:59)
> at
> org.apache.pig.impl.io.ValidatingInputFileSpec.<init>(ValidatingInputFileSpec.java:44)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.getSplits(PigInputFormat.java:200)
> at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:742)
> at org.apache.hadoop.mapred.jobcontrol.Job.submit(Job.java:370)
> at
> org.apache.hadoop.mapred.jobcontrol.JobControl.startReadyJobs(JobControl.java:247)
> at
> org.apache.hadoop.mapred.jobcontrol.JobControl.run(JobControl.java:279)
> at java.lang.Thread.run(Thread.java:619)
> Caused by: org.apache.pig.backend.datastorage.DataStorageException: Failed to
> obtain glob for dir/{dir1/subdir1,dir2/subdir2,dir3/subdir3}
> ... 13 more
> Caused by: java.io.IOException: Illegal file pattern: Expecting set closure
> character or end of range, or } for glob {dir1 at 5
> at
> org.apache.hadoop.fs.FileSystem$GlobFilter.error(FileSystem.java:1084)
> at
> org.apache.hadoop.fs.FileSystem$GlobFilter.setRegex(FileSystem.java:1069)
> at
> org.apache.hadoop.fs.FileSystem$GlobFilter.<init>(FileSystem.java:987)
> at org.apache.hadoop.fs.FileSystem.globPathsLevel(FileSystem.java:953)
> at org.apache.hadoop.fs.FileSystem.globPathsLevel(FileSystem.java:962)
> at org.apache.hadoop.fs.FileSystem.globPathsLevel(FileSystem.java:962)
> at org.apache.hadoop.fs.FileSystem.globPathsLevel(FileSystem.java:962)
> at org.apache.hadoop.fs.FileSystem.globStatus(FileSystem.java:902)
> at org.apache.hadoop.fs.FileSystem.globStatus(FileSystem.java:862)
> at
> org.apache.pig.backend.hadoop.datastorage.HDataStorage.asCollection(HDataStorage.java:215)
> ... 12 more
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