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From Ayon Sinha <>
Subject Re: Exception when joining HIVE tables
Date Wed, 21 Sep 2011 21:10:39 GMT
If you can share details of your tables and query we might be able to help. Do a desc formatted
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Also check out my Blog for answers to commonly asked questions.

From: Krish Khambadkone <>
Sent: Wednesday, September 21, 2011 1:11 PM
Subject: Exception when joining HIVE tables

Hi,  I get this exception when I try to join two hive tables or even when I use a specific
WHERE clause.   "SELECT *" from any individual table seems to work fine.  Any idea what
is missing here.  I am on hive version hive-0.7.0-cdh3u0.

java.lang.IllegalArgumentException: Can not create a Path from an empty string
    at org.apache.hadoop.fs.Path.checkPathArg(
    at org.apache.hadoop.fs.Path.<init>(
    at org.apache.hadoop.fs.Path.<init>(
    at org.apache.hadoop.mapred.JobClient.copyRemoteFiles(
    at org.apache.hadoop.mapred.JobClient.copyAndConfigureFiles(
    at org.apache.hadoop.mapred.JobClient.copyAndConfigureFiles(
    at org.apache.hadoop.mapred.JobClient.access$300(
    at org.apache.hadoop.mapred.JobClient$
    at org.apache.hadoop.mapred.JobClient$
    at Method)
    at org.apache.hadoop.mapred.JobClient.submitJobInternal(
    at org.apache.hadoop.mapred.JobClient.submitJob(
    at org.apache.hadoop.hive.ql.exec.ExecDriver.execute(
    at org.apache.hadoop.hive.ql.exec.MapRedTask.execute(
    at org.apache.hadoop.hive.ql.exec.Task.executeTask(
    at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(
    at org.apache.hadoop.hive.ql.Driver.launchTask(
    at org.apache.hadoop.hive.ql.Driver.execute(
    at org.apache.hadoop.hive.cli.CliDriver.processCmd(
    at org.apache.hadoop.hive.cli.CliDriver.processLine(
    at org.apache.hadoop.hive.cli.CliDriver.main(
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(
    at java.lang.reflect.Method.invoke(
    at org.apache.hadoop.util.RunJar.main(
Job Submission failed with exception 'java.lang.IllegalArgumentException(Can not create a
Path from an empty string)'
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.MapRedTask
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