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From Huanchen Zhang <>
Subject Re: Difference between InsertWithBatchWriter and InsertWithOutputFormat
Date Wed, 17 Oct 2012 02:48:43 GMT
Hello,  Corey

Thank you for your answer.

Can I use InsertWithBatchWriter for this task ? I mean, use context.write to write to hdfs,
use batchwriter.addMutation to write to accumulo.


On Oct 16, 2012, at 10:25 PM, Corey Nolet wrote:

> You can extend the output format to write to both and have the resulting record writer
underneath write to the correct endpoint depending on the items submitted from the job.
> On Oct 16, 2012, at 10:16 PM, Huanchen Zhang wrote:
>> Hello,
>> Hese I have a mapreduce job which needs to write to accumulo. I checked the examples.
It seems there are two different ways to write to accumulo, one is InsertWithBatchWriter,
one is InsertWithOutputFormat.
>> So, what is the difference of them ? Which one should I choose ?
>> I actually need to write to accumulo and hdfs in the same job. I seems InsertWithOutputFormat
cannot do this, because it needs to set the output format as "AccumuloOutputFormat.class",
and can only write to accumulo in one job, right ?
>> Thank you.
>> Best,
>> Huanchen

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