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From Gurjeet Singh <gurj...@gmail.com>
Subject Re: Slow full-table scans
Date Mon, 13 Aug 2012 22:12:20 GMT
Okay, I just ran this experiment. It did speed things up, but only by
4%. This all still seems awfully slow to me - does someone have
another suggestion ?

Thanks in advance!
Gurjeet

On Mon, Aug 13, 2012 at 12:51 AM, Gurjeet Singh <gurjeet@gmail.com> wrote:
> Thanks a lot!
>
> On Mon, Aug 13, 2012 at 12:27 AM, Stack <stack@duboce.net> wrote:
>> On Mon, Aug 13, 2012 at 6:10 AM, Gurjeet Singh <gurjeet@gmail.com> wrote:
>>> Thanks Lars!
>>>
>>> One final question :  is it advisable to issue multiple threads
>>> against a single HTable instance, like so:
>>>
>>> HTable table = ...
>>> for (i = 0; i < 10; i++) {
>>>   new ScanThread(table, startRow, endRow, rowProcessor).start();
>>> }
>>>
>>
>> Make an HTable per thread.  See the class comment:
>> http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/HTable.html
>>
>> St.Ack

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