accumulo-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Adam Fuchs <>
Subject Re: Tablet Load Balancer
Date Fri, 05 Oct 2012 01:00:19 GMT
Accumulo 1.4 supports dynamic tablet merging as well as splitting through
the TableOperations API, and will rebalance automatically.

On Oct 4, 2012 6:54 PM, "Roshan Punnoose" <> wrote:

> If I set the split points dynamically, is it possible to change those
> split points. Not just add. And then rebalance the cluster?
> On Oct 4, 2012 6:15 PM, "Adam Fuchs" <> wrote:
>> Roshan,
>> There's no way to make sure that multiple rows don't get split into
>> multiple tablets. A custom load balancer would be able to make sure that a
>> set of tablets are hosted together, but has no effect on choosing the split
>> points. If you want to guarantee that multiple entries are kept together
>> then you should put them in the same row. Alternatively, you could make
>> your tablet sizes ridiculously large and manually choose your split points
>> using the addSplits method, but it's usually easier to just put things into
>> the same row.
>> Cheers,
>> Adam
>> On Thu, Oct 4, 2012 at 5:48 PM, Roshan Punnoose <>wrote:
>>> Is there any documentation on using a custom Tablet Load Balancer? I
>>> want to make sure certain rows group onto the same tablet, and I "think"
>>> the right answer is to develop my own Tablet Load Balancer. Is that right?
>>> Thanks!
>>> Roshan

View raw message