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From Eric Newton <>
Subject Re: question on data block cache
Date Thu, 21 Jan 2016 17:57:40 GMT
Assuming you have on-going ingest, accumulo is going to re-sort/organize
your data. The new files that result will cause cache hit failures.

Make sure you enable data caching for your table since it is not turned on
for user tables by default.


On Wed, Jan 20, 2016 at 11:22 AM, z11373 <> wrote:

> Hi,
> I see the data cache hit rate percentage is in 80s.
> My client app sends a lot of small scan requests, and looking at per tablet
> details, I see the same number of tablets (where the data being queried
> from). We set the data cache size to 16GB, so I'd think it should have
> plenty of room. Is there a way for me to see if the percentage doesn't get
> higher (would expect in 90s if not 100%) because of 16GB not big enough, or
> it's just there are many data/tablets to load from?
> Thanks,
> Z
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