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From Swapna Swapna <talktoswa...@gmail.com>
Subject Re: Implement Custom Aggregate Functions in Phoenix
Date Fri, 18 Mar 2016 01:09:40 GMT
Thank you James for swift response.

is the process (adding to phoenix-core and rebuild the jar)  remains the
same for custom UDF's as well  (like as for custom aggregate functions)?

ex: we have UDF's like  UPPER, LOWER ,etc

On Thu, Mar 17, 2016 at 5:53 PM, James Taylor <jamestaylor@apache.org>
wrote:

> Hi Swapna,
> We don't support custom aggregate functions, only scalar functions
> (see PHOENIX-2069). For a custom aggregate function, you'd need to add them
> to phoenix-core and rebuild the jar. We're open to adding them to the code
> base if they're general enough. That's how FIRST_VALUE, LAST_VALUE, and
> NTH_VALUE made it in.
> Thanks,
> James
>
> On Thu, Mar 17, 2016 at 12:11 PM, Swapna Swapna <talktoswapna@gmail.com>
> wrote:
>
>> Hi,
>>
>> I found this in Phoenix UDF documentation:
>>
>>    - After compiling your code to a jar, you need to deploy the jar into
>>    the HDFS. It would be better to add the jar to HDFS folder configured for
>>    hbase.dynamic.jars.dir.
>>
>>
>> My question is, can that be any 'udf-user-specific' jar which need to be
>> copied to HDFS or would it need to register the function and update the
>> custom UDF classes inside phoenix-core.jar and rebuild the
>> 'phoenix-core.jar'
>>
>> Regards
>> Swapna
>>
>>
>>
>>
>> On Fri, Jan 29, 2016 at 6:31 PM, James Taylor <jamestaylor@apache.org>
>> wrote:
>>
>>> Hi Swapna,
>>> We currently don't support custom aggregate UDF, and it looks like you
>>> found the JIRA here: PHOENIX-2069. It would be a natural extension of UDFs.
>>> Would be great to capture your use case and requirements on the JIRA to
>>> make sure the functionality will meet your needs.
>>> Thanks,
>>> James
>>>
>>> On Fri, Jan 29, 2016 at 1:47 PM, Swapna Swapna <talktoswapna@gmail.com>
>>> wrote:
>>>
>>>> Hi,
>>>>
>>>> I would like to know the approach to implement and register custom
>>>> aggregate functions in Phoenix like the way we have built-in aggregate
>>>> functions like SUM, COUNT,etc
>>>>
>>>> Please help.
>>>>
>>>> Thanks
>>>> Swapna
>>>>
>>>
>>>
>>
>

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