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HBase >> mail # user >> Miserable Performance of gets

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Re: Miserable Performance of gets
On Tue, Mar 5, 2013 at 8:36 PM, kiran <[EMAIL PROTECTED]> wrote:

> Dear All,
> I had some miserable experience with gets (batch gets) in hbase. I have two
> tables with different rowkeys, columns are distributed across the two
> tables.
> Currently what I am doing is scan over one table and get all the rowkeys in
> the first table matching my filter. Then issue a batch get on another table
> to retrieve some columns. But even for 20 gets, the performance is like
> miserable (almost a second or two for 20 gets which is not acceptable).
> But, scanning even on few thousands of rows is getting completed in
> milliseconds.
What happens if you do those 20 batch gets in isolation, apart from the
scan?  Do you still have miserable performance?

What is your cluster setup like?  How many nodes?  How many regions?

> My concern is for about 20 gets if it takes second or two,
> How can it scale ??

Normally it does not take this long.  Lets figure out what is going on on
your setup.