Hi Ke,
We are still looking at possible complications of the VM
environment. I will post whatever we discover.
Thanks for your interest,
Sean
From: ke yuan
Sent: Friday, January 25, 2013 2:45 AM
To: [email protected]
Subject: Re: Problems
is there anything done with hardware? i used thinkpad t430,this problem
occurs,but i used about 100 machines ,there is nothing to do with this ,all
the machines is redhat 6.0,and the jdk is jdk1.5 to jdk1.6 , so i think there
is something to do with the hardware，any idea?
2013/1/22 Jean-Marc Spaggiari <[email protected]>
Hi Sean,
Will you be able to run the memtest86 on this VM? Maybe it's an issue
with the way the VM is managing the memory?
I ran HBase+Hadoop on a desktop with only 1.5G. So you should not have
any issue with 6GB.
I don't think the issue you are facing is related to hadoop. Can you
try to run a simple Java application in you JVM? Something which will
use lot of memory. And see if it works?
JM
2013/1/22, Sean Hudson <[email protected]>:
> Hi Jean-Marc,
> The Linux machine on which I am attempting to get
> Hadoop running is actually Linux running in a VM partition. This VM
> partition had 2 Gigs of RAM when I first encountered the problem. This RAM
> allocation has been bumped up to 6 Gigs, but the problem still persists,
> i.e
>
> bin/hadoop jar hadoop-*-examples.jar grep input output 'dfs[a-z.]+' still
> crashes out as before.
>
> Is there a minimum RAM size requirement?
> Will Hadoop run correctly on Linux in a VM partition?
>
> I had attempted to run Hadoop in Pseudo-Distributed
>
> Operation mode and this included modifying the conf/core-site.xml,
> conf/hdfs-site.xml and the conf/mapred-site.xml files as per the Quick Start
>
> instructions. I also formatted a new distributed-filesystem as per the
> instructions. To re-test in Standalone mode with 6 Gigs of RAM, I reversed
> the changes to the above three .xml files in /conf. However, I don't see a
> way to back-out the distributed-filesystem. Will the existence of this
> distributed-filesystem interfere with my Standalone tests?
>
> Regards,
>
> Sean Hudson
>
> -----Original Message-----
> From: Jean-Marc Spaggiari
> Sent: Friday, January 18, 2013 3:24 PM
> To: [email protected]
> Subject: Re: Problems
>
> Hi Sean,
>
> It's strange. You should not faced that. I faced same kind of issues
> on a desktop with memory errors. Can you install memtest86 and fullty
> test your memory (one pass is enought) to make sure you don't have
> issues on that side?
>
> 2013/1/18, Sean Hudson <[email protected]>:
>> Leo,
>> I downloaded the suggested 1.6.0_32 Java version to my home
>> directory, but I am still experiencing the same problem (See error
>> below).
>> The only thing that I have set in my hadoop-env.sh file is the JAVA_HOME
>> environment variable. I have also tried it with the Java directory added
>> to
>>
>> PATH.
>>
>> export JAVA_HOME=/home/shu/jre1.6.0_32
>> export PATH=$PATH:/home/shu/jre1.6.0_32
>>
>> Every other environment variable is defaulted.
>>
>> Just to clarify, I have tried this in Local Standalone mode and also in
>> Pseudo-Distributed Mode with the same result.
>>
>> Frustrating to say the least,
>>
>> Sean Hudson
>>
>>
>> shu@meath-nua:~/hadoop-1.0.4> bin/hadoop jar hadoop-examples-1.0.4.jar
>> grep
>>
>> input output 'dfs[a-z.]+'
>> #
>> # A fatal error has been detected by the Java Runtime Environment:
>> #
>> # SIGFPE (0x8) at pc=0xb7fc51fb, pid=23112, tid=3075554208
>> #
>> # JRE version: 6.0_32-b05
>> # Java VM: Java HotSpot(TM) Client VM (20.7-b02 mixed mode, sharing
>> linux-x86 )
>> # Problematic frame:
>> # C [ld-linux.so.2+0x91fb] double+0xab
>> #
>> # An error report file with more information is saved as:
>> # /home/shu/hadoop-1.0.4/hs_err_pid23112.log
>> #
>> # If you would like to submit a bug report, please visit:
>> # http://java.sun.com/webapps/bugreport/crash.jsp
>> # The crash happened outside the Java Virtual Machine in native code.
>> # See problematic frame for where to report the bug.
>> #
>> Aborted
>>
>> -----Original Message-----
>> From: Leo Leung
>> Sent: Thursday, January 17, 2013 6:46 PM
>> To: [email protected]
>> Subject: RE: Problems
>>
>> Use Sun/Oracle 1.6.0_32+ Build should be 20.7-b02+
>>
>> 1.7 causes failure and AFAIK, not supported, but you are free to try
>> the
>> latest version and report back.
>>
>>
>>
>> -----Original Message-----
>> From: Sean Hudson [mailto:[email protected]]
>> Sent: Thursday, January 17, 2013 6:57 AM
>> To: [email protected]
>> Subject: Re: Problems
>>
>> Hi,
>> My Java version is
>>
>> java version "1.6.0_25"
>> Java(TM) SE Runtime Environment (build 1.6.0_25-b06) Java HotSpot(TM)
>> Client
>>
>> VM (build 20.0-b11, mixed mode, sharing)
>>
>> Would you advise obtaining a later Java version?
>>
>> Sean
>>
>> -----Original Message-----
>> From: Jean-Marc Spaggiari
>> Sent: Thursday, January 17, 2013 2:52 PM
>> To: [email protected]
>> Subject: Re: Problems
>>
>> Hi Sean,
>>
>> This is an issue with your JVM. Not related to hadoop.
>>
>> Which JVM are you using, and can you try with the last from Sun?
>>
>> JM
>>
>> 2013/1/17, Sean Hudson <[email protected]>:
>>> Hi,
>>> I have recently installed hadoop-1.0.4 on a linux machine.
>>> Whilst working through the post-install instructions contained in the
>>> “Quick Start”
>>> guide, I incurred the following catastrophic Java runtime error (See
>>> below).
>>> I have attached the error report file “hs_err_pid24928.log”. I have
>>> submitted a Java bug report, but perhaps it is a known hadoop-1.0.4
>>> version problem.
>>>
>>> I am a first time user of Hadoop and would welcome guidance on this
>>> problem,
>>>
>>> Regards,
>>>
>>> Sean Hudson.
>>>
>>> shu@meath-nua:~/hadoop-1.0.4> bin/hadoop jar hadoop-examples-1.0.4.jar
>>> grep input output 'dfs[a-z.]+'
>>> #
>>> # A fatal error has been detected by the Java Runtime Environment:
>>> #
>>> # SIGFPE (0x8) at pc=0xb7f2b1fb, pid=24928, tid=3074923424 # # JRE
>>> version: 6.0_25-b06 # Java VM: Java HotSpot(TM) Client VM (20.0-b11
>>> mixed mode, sharing
>>> linux-x86 )
>>> # Problematic frame:
>>> # C [ld-linux.so.2+0x91fb] double+0xab # # An error report file with
>>> more information is saved as:
>>> # /home/shu/hadoop-1.0.4/hs_err_pid24928.log
>>> #
>>> # If you would like to submit a bug report, please visit:
>>> # http://java.sun.com/webapps/bugreport/crash.jsp
>>> # The crash happened outside the Java Virtual Machine in native code.
>>> # See problematic frame for where to report the bug.
>>> #
>>> Aborted
>>> --
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