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From "rajeshbabu@apache.org" <chrajeshbab...@gmail.com>
Subject Re: How do local indexes work?
Date Fri, 30 Jun 2017 06:00:46 GMT
Yes Neelesh, at present need to touch all the regions and there is a JIRA
for the optimization[1 <https://issues.apache.org/jira/browse/PHOENIX-3941>]

[1] https://issues.apache.org/jira/browse/PHOENIX-3941

Thanks,
Rajeshbbu.

On Fri, Jun 30, 2017 at 11:16 AM, Neelesh <neeleshs@gmail.com> wrote:

> Thanks for the slides, Rajesh Babu.
>
> Does this mean any read path will have to scan all regions of a table? Is
> there an optimization available if the primary key and the index share a
> common prefix, thus reducing the number of regions to look at?
>
> Thanks again!
>
>
>
> On Jun 29, 2017 7:24 PM, "rajeshbabu@apache.org" <chrajeshbabu32@gmail.com>
> wrote:
>
> 9,10 slides gives details how read path works.
>
> https://www.slideshare.net/rajeshbabuchintaguntla/local-seco
> ndary-indexes-in-apache-phoenix
>
> Let's know if you need more information.
>
> Thanks,
> Rajeshbabu.
>
> On Fri, Jun 30, 2017 at 4:20 AM, Neelesh <neeleshs@gmail.com> wrote:
>
>> Hi,
>>    The documentation says  - "From 4.8.0 onwards we are storing all local
>> index data in the separate shadow column families in the same data table".
>>
>> It is not quite clear to me how the read path works with local indexes.
>> Is there any document that has some details on how it works ? PHOENIX-1734
>> has some (shadow CFs), but not enough.
>>
>> Any pointers are appreciated!
>>
>> Thanks
>>
>>
>
>

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