Oh, one other thing that I should mention (was prompted off-list).
(definition time since cross-list now: HBase regions == Accumulo tablets)
Accumulo will handle many more regions than HBase does now due to a
splittable metadata table. While I was told this was a very long and
arduous journey to implement correctly (WRT splitting, merges and bulk
loading), users with "too many regions" problems are extremely few and
far between for Accumulo.
I was very happy to see effort/design being put into this in HBase. And,
just to be fair in criticism/praises, HBase does appear to me to do
assignments of regions much faster than Accumulo does on a small cluster
(~5-10 nodes). Accumulo may take a few seconds to notice and reassign
tablets. I have yet to notice this with HBase (which also could be due
to lack of personal testing).
Jerry He wrote:
Hi, folks
We have people that are evaluating HBase vs Accumulo.
Security is an important factor.
But I think after the Cell security was added in HBase, there is no more
real gap compared to Accumulo.
I know we have both HBase and Accumulo experts on this list.
Could someone shred more light?
I am looking for real gap comparing HBase to Accumulo if there is any so
that I can be prepared to address them. This is not limited to the security
area.
There are differences in some features and implementations. But they don't
see like real 'gaps'.
Any comments and feedbacks are welcome.
Thanks,
Jerry
