"select * from table" does not use map-reduce so it seems your error has to do with hadoop/map-reduce, not hive i would run some test for map-reduce
On Wed, Sep 21, 2011 at 4:11 PM, Krish Khambadkone <kkhambadk...@apple.com>wrote: > 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(Path.java:82) > at org.apache.hadoop.fs.Path.<init>(Path.java:90) > at org.apache.hadoop.fs.Path.<init>(Path.java:50) > at > org.apache.hadoop.mapred.JobClient.copyRemoteFiles(JobClient.java:608) > at > org.apache.hadoop.mapred.JobClient.copyAndConfigureFiles(JobClient.java:713) > at > org.apache.hadoop.mapred.JobClient.copyAndConfigureFiles(JobClient.java:637) > at org.apache.hadoop.mapred.JobClient.access$300(JobClient.java:170) > at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:848) > at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:833) > 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:1115) > at > org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:833) > at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:807) > at > org.apache.hadoop.hive.ql.exec.ExecDriver.execute(ExecDriver.java:657) > at > org.apache.hadoop.hive.ql.exec.MapRedTask.execute(MapRedTask.java:123) > at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:130) > at > org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57) > at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1063) > at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:900) > at org.apache.hadoop.hive.ql.Driver.run(Driver.java:748) > at > org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:164) > at > org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:241) > at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:456) > 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.hadoop.util.RunJar.main(RunJar.java:186) > 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 >
