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From vaibhav thapliyal <>
Subject BatchScanner taking too much time to scan rows
Date Tue, 12 May 2015 17:39:57 GMT

I am using BatchScanner to scan rows from a accumulo table. The table has
around 187m entries and I am using a 3 node cluster which has accumulo

I have passed 10000 ids which are stored as row id in my table as a list in
the setRanges() method.

This whole process takes around 50 secs(from adding the ids in the list to
scanning the whole table using the BatchScanner).

I tried switching on bloom filters but that didn't work.

Also if anyone could briefly explain how a BatchScanner works, how it does
parallel scanning it would help me understand what I am doing better.


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