We are using Hive 0.7.1 and there HADOOP_HOME must be exported so that it is available as environment variable.
Thanks, Vinod On Wed, Jul 18, 2012 at 10:48 PM, Nitin Pawar <nitinpawar...@gmail.com>wrote: > from hive trunk i can only see this > I am not sure I am 100% sure but I remember setting up HADOOP_HOME always > > > http://svn.apache.org/repos/asf/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/MapRedTask.java > > > String hadoopExec = conf.getVar(HiveConf.ConfVars.HADOOPBIN); > > this change was introduced in 0.8 > > from > http://svn.apache.org/repos/asf/hive/branches/branch-0.9/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java > > <http://svn.apache.org/repos/asf/hive/branches/branch-0.8/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java> > > HADOOPBIN("hadoop.bin.path", System.getenv("HADOOP_HOME") + "/bin/hadoop"), > > On Wed, Jul 18, 2012 at 10:38 PM, kulkarni.swar...@gmail.com < > kulkarni.swar...@gmail.com> wrote: > >> 0.9 >> >> >> On Wed, Jul 18, 2012 at 12:04 PM, Nitin Pawar <nitinpawar...@gmail.com>wrote: >> >>> this also depends on what version of hive you are using >>> >>> >>> On Wed, Jul 18, 2012 at 10:33 PM, kulkarni.swar...@gmail.com < >>> kulkarni.swar...@gmail.com> wrote: >>> >>>> Thanks for your reply nitin. >>>> >>>> Ok. So you mean we always need to set HADOOP_HOME irrespective of >>>> "hadoop" is on the path or not. Correct? >>>> >>>> Little confused because that contradicts what's mentioned here[1]. >>>> >>>> [1] >>>> https://cwiki.apache.org/confluence/display/Hive/GettingStarted#GettingStarted-RunningHive >>>> >>>> >>>> Thanks, >>>> >>>> On Wed, Jul 18, 2012 at 11:59 AM, Nitin Pawar >>>> <nitinpawar...@gmail.com>wrote: >>>> >>>>> This is not a bug. >>>>> >>>>> even if hadoop was path, hive does not use it. >>>>> Hive internally uses HADOOP_HOME in the code base. So you will always >>>>> need to set that for hive. >>>>> Where as for HADOOP clusters, HADOOP_HOME is deprecated but hive still >>>>> needs it. >>>>> >>>>> Don't know if that answers your question >>>>> >>>>> Thanks, >>>>> Nitin >>>>> >>>>> >>>>> On Wed, Jul 18, 2012 at 10:01 PM, kulkarni.swar...@gmail.com < >>>>> kulkarni.swar...@gmail.com> wrote: >>>>> >>>>>> Hello, >>>>>> >>>>>> The hive documentation states that either HADOOP_HOME should be set >>>>>> or hadoop should be on the path. However for some cases, where >>>>>> HADOOP_HOME >>>>>> was not set but hadoop was on path, I have seen this error pop up: >>>>>> >>>>>> java.io.IOException: *Cannot run program "null/bin/hadoop" *(in >>>>>> directory "/root/swarnim/hive-0.9.0-cern1-SNAPSHOT"): >>>>>> java.io.IOException: >>>>>> error=2, No such file or directory >>>>>> at java.lang.ProcessBuilder.start(ProcessBuilder.java:460) >>>>>> at java.lang.Runtime.exec(Runtime.java:593) >>>>>> at java.lang.Runtime.exec(Runtime.java:431) >>>>>> at >>>>>> org.apache.hadoop.hive.ql.exec.MapRedTask.execute(MapRedTask.java:268) >>>>>> at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:134) >>>>>> at >>>>>> org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57) >>>>>> at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1326) >>>>>> at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1118) >>>>>> at org.apache.hadoop.hive.ql.Driver.run(Driver.java:951) >>>>>> at >>>>>> org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:258) >>>>>> at >>>>>> org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:215) >>>>>> at >>>>>> org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:406) >>>>>> at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:689) >>>>>> at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:557) >>>>>> 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:208) >>>>>> >>>>>> Digging into the code in MapRedTask.java, I found the following >>>>>> (simplified): >>>>>> >>>>>> String *hadoopExec* = conf.getVar(System.getenv("HADOOP_HOME") + >>>>>> "/bin/hadoop"); >>>>>> ... >>>>>> >>>>>> Runtime.getRuntime().exec(*hadoopExec*, env, new File(workDir)); >>>>>> >>>>>> Clearly, if HADOOP_HOME is not set, the command that it would try to >>>>>> execute is "null/bin/hadoop" which is exactly the exception I am getting. >>>>>> >>>>>> Has anyone else run into this before? Is this a bug? >>>>>> >>>>>> Thanks, >>>>>> -- >>>>>> Swarnim >>>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> Nitin Pawar >>>>> >>>>> >>>> >>>> >>>> -- >>>> Swarnim >>>> >>> >>> >>> >>> -- >>> Nitin Pawar >>> >>> >> >> >> -- >> Swarnim >> > > > > -- > Nitin Pawar > >
