Hey guys, we found an issue that looks like a bug (hive 0.8 , caldera's distribution).
SELECT count(1) FROM table1 a LEFT OUTER JOIN table2 b ON ( a.key1 = b.key1 AND a.key2 = b.KEY2) fails with java.lang.IllegalArgumentException: Can not create a Path from an empty string ( full stack trace at the bottom of this email). which stems from this code (org.apache.hadoop.hive.ql.exec.Utilities.getHiveJobID(Utilities.java:379)) public static String getHiveJobID(Configuration job) { String planPath = HiveConf.getVar(job, HiveConf.ConfVars.PLAN); if (planPath != null) { return (new Path(planPath)).getName(); } return null; } Querying the individual tables works fine, as works fine the normal inner join (same query removing 'left outer'). RIGHT JOIN and FULL OUTER JOIN don't work either. Has anybody else had this issue ? Thanks, Roberto Full stack trace: java.lang.InstantiationException: org.apache.hadoop.hive.ql.io.HiveOutputFormat at java.lang.Class.newInstance0(Class.java:340) at java.lang.Class.newInstance(Class.java:308) at org.apache.hadoop.hive.ql.exec.ExecDriver.addInputPath(ExecDriver.java:859) at org.apache.hadoop.hive.ql.exec.ExecDriver.addInputPaths(ExecDriver.java:903) at org.apache.hadoop.hive.ql.exec.ExecDriver.execute(ExecDriver.java:426) at org.apache.hadoop.hive.ql.exec.MapRedTask.execute(MapRedTask.java:136) at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:133) at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57) at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1332) at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1123) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:931) at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:255) at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:212) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:403) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:338) at org.apache.hadoop.hive.cli.CliDriver.processReader(CliDriver.java:436) at org.apache.hadoop.hive.cli.CliDriver.processFile(CliDriver.java:446) at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:642) at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:554) 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:156) Job Submission failed with exception 'java.lang.InstantiationException(org.apache.hadoop.hive.ql.io.HiveOutputFormat)' 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.exec.Utilities.getHiveJobID(Utilities.java:379) at org.apache.hadoop.hive.ql.exec.Utilities.clearMapRedWork(Utilities.java:192) at org.apache.hadoop.hive.ql.exec.ExecDriver.execute(ExecDriver.java:476) at org.apache.hadoop.hive.ql.exec.MapRedTask.execute(MapRedTask.java:136) at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:133) at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57) at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1332) at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1123) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:931) at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:255) at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:212) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:403) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:338) at org.apache.hadoop.hive.cli.CliDriver.processReader(CliDriver.java:436) at org.apache.hadoop.hive.cli.CliDriver.processFile(CliDriver.java:446) at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:642) at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:554) 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:156)