Did you checked the Path?Whether it is empty or contain contents?
On Thu, May 7, 2015 at 1:42 PM, Viral Bajaria <viral.baja...@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/
