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.
[email protected] 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, [email protected]<[email protected]>
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
[email protected]
</quote>
Quoted from:
http://apache-accumulo.1065345.n5.nabble.com/Accumulo-Map-Reduce-tp12575p12576.html
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