Hi All,
I am having a suggestion for improving the filter queries which require
expression evaluation for
identifying its dictionary value.
*Current design *
In *greater than/less-than/Like* *filters*, system first iterates each row
present in the dictionary cache for identifying valid filter a
Hi Shahid,
its a well explained document, just need few clarifications,
a) once compaction is done the segments and its blocks will be invalidated,
LRU's scope is to evict the unused objects from memory or least recently
used objects from memory, but after compaction the segment itself become
+1
Thanks,
Sujith
On Nov 24, 2016 10:37 PM, "manish gupta" wrote:
> +1
>
> Regards
> Manish Gupta
>
> On Thu, Nov 24, 2016 at 7:30 PM, Kumar Vishal
> wrote:
>
> > +1
> >
> > -Regards
> > Kumar Vishal
> >
> > On Thu, Nov 24, 2016 at 2:41 PM, Raghunandan S <
> > carbondatacontributi...@gmail.com
Hi Aniket,
I think it will be better if we can consider delete and update compaction
feature also in the high level design list.
Thanks,
Sujith
On Nov 23, 2016 4:29 AM, "Aniket Adnaik (JIRA)" wrote:
> Aniket Adnaik created CARBONDATA-440:
>
>
>
Hi Aniket,
Its a well documented design, just want to know few points like
a. Format of the RowID and its datatype
b. Impact of this feature in select query since every time query process
has to exclude each deleted records and include corresponding updated
record, any optimization is c
+1 for first approach.
On Nov 17, 2016 9:58 AM, "金铸" wrote:
> +1 for proposal 1
>
>
> 在 2016/11/17 12:13, 邢冰 写道:
>
>> +1 for proposal 1
>>
>> thx
>>
>>
>>
>>
>> 发自网易邮箱大师
>> On 11/17/2016 12:09, Ravindra Pesala wrote:
>> +1 for proposal 1
>>
>> On 17 November 2016 at 08:23, Xiaoqiao He wrote:
>>
> Liang
>
> 2016-11-14 15:18 GMT+08:00 sujith chacko :
>
> > Hi All,
> >
> > I am going to optimize the LIKE Filter query flow for no-dictionary
> > columns, please find the details mentioned below.
> >
> > *Current design:*
> > For Like fil
Hi All,
I am going to optimize the LIKE Filter query flow for no-dictionary
columns, please find the details mentioned below.
*Current design:*
For Like filter queries no push down is happening to carbon layer, because
of this there will be no block/blocklet level pruning which can happen
befo