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From Christopher <>
Subject Re: hasNext throws weird exception
Date Thu, 19 Nov 2015 18:56:48 GMT
When you call the iterator method on a scanner, Accumulo instantiates a
bunch of internal data structures that are specific to that iterator/query.
Scanner is basically a configuration object which has iterator as a factory
method. The iterator is really what does the query work. Calling iterator
multiple times creates multiple, independent queries.

On Thu, Nov 19, 2015, 12:44 z11373 <> wrote:

> Thanks Christopher! What are those separate iterations? The scanner object
> was not shared (besides it's only single thread), and also my test app is
> the only client app running at that time.
> I am just curious, however, the code you suggested is a good practice, and
> I'll keep in mind.
> Thanks,
> Z
> --
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