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From Geoffry Roberts <>
Subject Out of memory when putting many rows in an Acc table
Date Tue, 30 Sep 2014 16:03:40 GMT
I am try to pump some data into Accumulo but I keep encountering

Exception in thread "Thrift Connection Pool Checker"
java.lang.OutOfMemoryError: Java heap space

at java.util.HashMap.newValueIterator(

at java.util.HashMap$Values.iterator(




I tried, as a work around, creating a new BatchWriter and closing the old
one every ten thousand rows, but to no avail.  Data gets written up to the
200kth row, then the error.

I have a table of 8M rows in a RDB that I am pumping into Acc via a groovy
script.  The rows are narrow, a short text field and four floats.

I googled of course but nothing was helpful.  What can be done?

Thanks so much.

There are ways and there are ways,

Geoffry Roberts

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