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From unmesha sreeveni <unmeshab...@gmail.com>
Subject Re: Error : "Cannot create a path from empty string"
Date Thu, 07 May 2015 10:15:26 GMT
Did you checked the Path?Whether it is empty or contain contents?


On Thu, May 7, 2015 at 1:42 PM, Viral Bajaria <viral.bajaria@gmail.com>
wrote:

> Hi,
>
> We are facing a weird error in a multi-stage mapreduce job (> 10 jobs).
>
> A few stages run fine and then randomly 1 of the job would fail with the
> following error:
>
> 2015-05-07 07:56:01,467 WARN org.apache.hadoop.mapred.Child: Error running child
> java.lang.IllegalArgumentException: Can not create a Path from an empty string
> 	at org.apache.hadoop.fs.Path.checkPathArg(Path.java:82)
> 	at org.apache.hadoop.fs.Path.<init>(Path.java:90)
> 	at org.apache.hadoop.hive.ql.io.HiveInputFormat$HiveInputSplit.getPath(HiveInputFormat.java:110)
> 	at org.apache.hadoop.mapred.MapTask.updateJobWithSplit(MapTask.java:451)
> 	at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:409)
> 	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:366)
> 	at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:415)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
> 	at org.apache.hadoop.mapred.Child.main(Child.java:249)
> 2015-05-07 07:56:01,469 INFO org.apache.hadoop.mapred.Task: Runnning cleanup for the
task
>
>
> I checked the mapred.input.dir and it's reading from the intermediate output of the previous
job. It's a valid HDFS path, so not sure why the child finds an empty string.
>
> Any pointers to what else we can debug ?
>
> Thanks,
>
> Viral
>
>


-- 
*Thanks & Regards *


*Unmesha Sreeveni U.B*
*Hadoop, Bigdata Developer*
*Centre for Cyber Security | Amrita Vishwa Vidyapeetham*
http://www.unmeshasreeveni.blogspot.in/

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