On Wed, May 30, 2012 at 9:37 AM, Whitney Sorenson <[email protected]> wrote:
> We have been using HBase Scans to feed MapReduce jobs for over a year
> now. However, on close inspection, we have seen instances where some
> block of rows are inexplicably missing.
>
> We thought that this may happen during region splits or with jobs with
> many mappers, but we have seen, for example, 1000 rows missing from a
> 150,000 row scan coming from a single mapper.
>
> It is not easily reproducible - launching the job again includes all
> the rows. Does anyone have any insight into what may be going on, or
> if there is a bug somewhere?
>

Which version of HBase Whitney?
St.Ack

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