OPP will be marginally faster. Maybe 10%? I don't think anyone has
benchmarked it.
On Fri, Apr 23, 2010 at 10:30 AM, Joost Ouwerkerk wrote:
> In that case I should probably wait for 0.7. Is there any fundamental
> performance difference in get_range_slices between Random and
> Order-Preserving
In that case I should probably wait for 0.7. Is there any fundamental
performance difference in get_range_slices between Random and
Order-Preserving partitioners. If so, by what factor?
joost.
On Fri, Apr 23, 2010 at 10:47 AM, Jonathan Ellis wrote:
> You could look into it, but it's not going
You could look into it, but it's not going to be an easy backport
since SSTableReader and SSTableScanner got split into two classes in
trunk.
On Fri, Apr 23, 2010 at 9:39 AM, Joost Ouwerkerk wrote:
> Awesome. In the meantime, I hacked something similar myself. The
> performance difference does
Awesome. In the meantime, I hacked something similar myself. The
performance difference does not appear to be material. I think the real
killer is the get_range_slices call. Relative to that, the cost of getting
the connection appears to be more or less trivial. What can I do to
alleviate that
Great! Created https://issues.apache.org/jira/browse/CASSANDRA-1017
to track this.
On Fri, Apr 23, 2010 at 4:12 AM, Johan Oskarsson wrote:
> I have written some code to avoid thrift reconnection, it just keeps the
> connection open between get_range_slices calls.
> I can extract that and put it
I have written some code to avoid thrift reconnection, it just keeps the
connection open between get_range_slices calls.
I can extract that and put it up but not until early next week.
/Johan
On 23 apr 2010, at 05.09, Jonathan Ellis wrote:
> That would be an easy win, sure.
>
> On Thu, Apr 22
That would be an easy win, sure.
On Thu, Apr 22, 2010 at 9:27 PM, Joost Ouwerkerk wrote:
> I was getting client timeouts in ColumnFamilyRecordReader.maybeInit() when
> MapReducing. So I've reduced the Range Batch Size to 256 (from 4096) and
> this seems to have fixed my problem, although it has
I was getting client timeouts in ColumnFamilyRecordReader.maybeInit() when
MapReducing. So I've reduced the Range Batch Size to 256 (from 4096) and
this seems to have fixed my problem, although it has slowed things down a
bit -- presumably because there are 16x more calls to get_range_slices.
Whil
