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From Harsh J <ha...@cloudera.com>
Subject Re: Starting Datanode
Date Sat, 21 May 2011 16:08:00 GMT
FWIW, my 'java' output tells me:

-jvm is a synonym for the "client" VM  [deprecated]

i.e., -jvm == -client

I do not know when it was introduced, but it says deprecated in u24.

Additionally, I do not think "java -jvm server" makes any sense at
all. Looks like a genuine typo/overlook/bug. Do file a JIRA for this,
and fix it to use "-client" alone, if I understand what it really
means to do if EUID == 0.

On Sat, May 21, 2011 at 4:27 AM, Anh Nguyen <anguyen@redhat.com> wrote:
> On 05/20/2011 02:33 PM, Marcos Ortiz wrote:
>>
>> On 05/20/2011 04:08 PM, Anh Nguyen wrote:
>>>
>>> On 05/20/2011 02:06 PM, Marcos Ortiz wrote:
>>>>
>>>> On 05/20/2011 04:27 PM, Marcos Ortiz wrote:
>>>>>
>>>>> On 05/20/2011 03:46 PM, Anh Nguyen wrote:
>>>>>>
>>>>>> On 05/20/2011 01:15 PM, Marcos Ortiz wrote:
>>>>>>>
>>>>>>> On 05/20/2011 01:02 PM, Anh Nguyen wrote:
>>>>>>>>
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> I just upgraded to hadoop-0.20.203.0, and am having problem
starting
>>>>>>>> the
>>>>>>>> datanode:
>>>>>>>> # hadoop datanode
>>>>>>>> Unrecognized option: -jvm
>>>>>>>> Could not create the Java virtual machine.
>>>>>>>>
>>>>>>>> It looks like it has something to do with daemon.sh, particularly
>>>>>>>> the
>>>>>>>> setting of HADOOP_OPTS:
>>>>>>>>   if [[ $EUID -eq 0 ]]; then
>>>>>>>>     HADOOP_OPTS="$HADOOP_OPTS -jvm server $HADOOP_DATANODE_OPTS"
>>>>>>>>   else
>>>>>>>>     HADOOP_OPTS="$HADOOP_OPTS -server $HADOOP_DATANODE_OPTS"
>>>>>>>>   fi
>>>>>>>>
>>>>>>>> Am I missing something?
>>>>>>>>
>>>>>>>> Thanks in advance.
>>>>>>>>
>>>>>>>> Anh-
>>>>>>>>
>>>>>>> Which Java's version are you using?
>>>>>>>
>>>>>>>
>>>>>> # java -version
>>>>>> java version "1.6.0_20"
>>>>>> Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
>>>>>> Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode)
>>>>>>
>>>>>> It worked with hadoop-0.20.2.
>>>>>> Anh-
>>>>>
>>>>> How do you are starting the services? using bin/start-all.sh o simply
>>>>> the datanode?
>>>>>
>>>>>
>>>> Anh, test first that this option (-jvm is included in that Java
>>>> version).
>>>>
>>>>
>>> Tested earlier:
>>> # java -jvm
>>> Unrecognized option: -jvm
>>> Could not create the Java virtual machine.
>>>
>> Did you check the requirements for that release? I don´t know if this
>> version require at least a mayor version to 1.6.20.
>> Did you test with the 1.6.24?
>
> Frankly, I have seen/used -jvm. What is it?
> Anh-
>>
>> I think that can be a bug.
>> Take a time to review the last issues for Hadoop on the JIRA of the
>> project.
>>
>> Regards
>>
>
>



-- 
Harsh J

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