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Hive, mail # user - HADOOP_HOME requirement


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Re: HADOOP_HOME requirement
kulkarni.swarnim@...) 2012-07-18, 17:50
Hm. Yeah I tried out with a few version 0.7 -> 0.9 and seems like they all
do. May be we should just update the documentation then?

On Wed, Jul 18, 2012 at 12:34 PM, Vinod Singh <[EMAIL PROTECTED]> wrote:

> 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 <[EMAIL PROTECTED]>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, [EMAIL PROTECTED] <
>> [EMAIL PROTECTED]> wrote:
>>
>>> 0.9
>>>
>>>
>>> On Wed, Jul 18, 2012 at 12:04 PM, Nitin Pawar <[EMAIL PROTECTED]>wrote:
>>>
>>>> this also depends on what version of hive you are using
>>>>
>>>>
>>>> On Wed, Jul 18, 2012 at 10:33 PM, [EMAIL PROTECTED] <
>>>> [EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]
>>>>> > 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, [EMAIL PROTECTED] <
>>>>>> [EMAIL PROTECTED]> 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)
Swarnim