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Posted to common-user@hadoop.apache.org by Li Shengmei <li...@ict.ac.cn> on 2012/09/19 09:02:36 UTC
About ant Hadoop
Hi,all
I revise the source codes of hadoop-1.0.3 and use ant to recompile
hadoop. It compiles successfully. Then I "jar cvf hadoop-core-1.0.3.jar *"
and copy the new hadoop-core-1.0.3.jar to overwirite the $HADOOP_HOME/
hadoop-core-1.0.3.jar in every node machine. Then I use hadoop to test the
wordcount application. But the application halts at map 0% reduce 0%.
Does anyone give suggestions?
Thanks a lot.
May
Re: About ant Hadoop
Posted by Hemanth Yamijala <yh...@thoughtworks.com>.
Can you please look at the jobtracker and tasktracker logs on nodes
where the task has been launched ? Also see if the job logs are
picking up anything. They'll probably give you clues on what is
happening.
Also, is HDFS ok ? i.e. are you able to read files already loaded etc.
Thanks
hemanth
On 9/19/12, Li Shengmei <li...@ict.ac.cn> wrote:
> Hi,all
>
> I revise the source codes of hadoop-1.0.3 and use ant to recompile
> hadoop. It compiles successfully. Then I "jar cvf hadoop-core-1.0.3.jar *"
> and copy the new hadoop-core-1.0.3.jar to overwirite the $HADOOP_HOME/
> hadoop-core-1.0.3.jar in every node machine. Then I use hadoop to test the
> wordcount application. But the application halts at map 0% reduce 0%.
>
> Does anyone give suggestions?
>
> Thanks a lot.
>
>
>
> May
>
>
>
>
>
>
>
>
Re: About ant Hadoop
Posted by Hemanth Yamijala <yh...@thoughtworks.com>.
Can you please look at the jobtracker and tasktracker logs on nodes
where the task has been launched ? Also see if the job logs are
picking up anything. They'll probably give you clues on what is
happening.
Also, is HDFS ok ? i.e. are you able to read files already loaded etc.
Thanks
hemanth
On 9/19/12, Li Shengmei <li...@ict.ac.cn> wrote:
> Hi,all
>
> I revise the source codes of hadoop-1.0.3 and use ant to recompile
> hadoop. It compiles successfully. Then I "jar cvf hadoop-core-1.0.3.jar *"
> and copy the new hadoop-core-1.0.3.jar to overwirite the $HADOOP_HOME/
> hadoop-core-1.0.3.jar in every node machine. Then I use hadoop to test the
> wordcount application. But the application halts at map 0% reduce 0%.
>
> Does anyone give suggestions?
>
> Thanks a lot.
>
>
>
> May
>
>
>
>
>
>
>
>
Re: About ant Hadoop
Posted by Hemanth Yamijala <yh...@thoughtworks.com>.
Can you please look at the jobtracker and tasktracker logs on nodes
where the task has been launched ? Also see if the job logs are
picking up anything. They'll probably give you clues on what is
happening.
Also, is HDFS ok ? i.e. are you able to read files already loaded etc.
Thanks
hemanth
On 9/19/12, Li Shengmei <li...@ict.ac.cn> wrote:
> Hi,all
>
> I revise the source codes of hadoop-1.0.3 and use ant to recompile
> hadoop. It compiles successfully. Then I "jar cvf hadoop-core-1.0.3.jar *"
> and copy the new hadoop-core-1.0.3.jar to overwirite the $HADOOP_HOME/
> hadoop-core-1.0.3.jar in every node machine. Then I use hadoop to test the
> wordcount application. But the application halts at map 0% reduce 0%.
>
> Does anyone give suggestions?
>
> Thanks a lot.
>
>
>
> May
>
>
>
>
>
>
>
>
Re: About ant Hadoop
Posted by Hemanth Yamijala <yh...@thoughtworks.com>.
Can you please look at the jobtracker and tasktracker logs on nodes
where the task has been launched ? Also see if the job logs are
picking up anything. They'll probably give you clues on what is
happening.
Also, is HDFS ok ? i.e. are you able to read files already loaded etc.
Thanks
hemanth
On 9/19/12, Li Shengmei <li...@ict.ac.cn> wrote:
> Hi,all
>
> I revise the source codes of hadoop-1.0.3 and use ant to recompile
> hadoop. It compiles successfully. Then I "jar cvf hadoop-core-1.0.3.jar *"
> and copy the new hadoop-core-1.0.3.jar to overwirite the $HADOOP_HOME/
> hadoop-core-1.0.3.jar in every node machine. Then I use hadoop to test the
> wordcount application. But the application halts at map 0% reduce 0%.
>
> Does anyone give suggestions?
>
> Thanks a lot.
>
>
>
> May
>
>
>
>
>
>
>
>