accumulo-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Josh Elser <josh.el...@gmail.com>
Subject Re: Accumulo Map Reduce
Date Wed, 17 Dec 2014 03:37:45 GMT
If you're still getting connection refused errors, make sure that you 
started the YARN Resource Manager and Node Manager processes, typically 
via $HADOOP_PREFIX/sbin/start-yarn.sh.

panqingcui@163.com wrote:
> I using  Hadoop 2.5.0 ,I want to use MapReduce in online, do the table associated operation.
>
> <quote author='Josh Elser'>
> Accumulo provides an AccumuloInputFormat which allows Accumulo to be
> the source of data for a MapReduce job. We also provide a few
> OutputFormat implementations, the easiest to use being the
> AccumuloOutputFormat which will use BatchWriters to write mutations
> that you generate into Accumulo. You can look at
> https://github.com/apache/accumulo/blob/1.6/examples/simple/src/main/java/org/apache/accumulo/examples/simple/mapreduce/TeraSortIngest.java
> for an end-to-end example of a MapReduce job.
>
> If you're trying to run your MapReduce job in local mode and getting a
> ConnectException, it sounds like you're not actually running in local
> mode as you expect. Can you provide more information as to what you're
> actually invoking? Also, are you using Hadoop 1 or Hadoop 2?
>
>
> On Mon, Dec 15, 2014 at 3:52 AM, panqingcui@163.com<panqingcui@163.com>
> wrote:
>> Hi:
>> There are several problems on MapReduce
>> 1、I wanted to know more about the Accumulo Map Reduce is a specific
>> function is to achieve what function? Use in what time?
>>
>>   2、I want to do a MapReduce test in the local, there is always wrong.
>> MapReduce write their own should be how to run the test?
>> Caused by: java.net.ConnectException: Connection refused: no further
>> information
>>
>>
>> panqingcui@163.com
>
> </quote>
> Quoted from:
> http://apache-accumulo.1065345.n5.nabble.com/Accumulo-Map-Reduce-tp12575p12576.html
>
> _____________________________________
> Sent from http://apache-accumulo.1065345.n5.nabble.com
>

Mime
View raw message