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From Neelesh <neele...@gmail.com>
Subject Re: How do local indexes work?
Date Fri, 30 Jun 2017 06:09:29 GMT
Thanks for the information Rajesh Babu, this is really helpful!

On Jun 29, 2017 11:00 PM, "rajeshbabu@apache.org" <chrajeshbabu32@gmail.com>
wrote:

> 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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