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From Josh Elser <>
Subject Re: Decrease HTTP chattiness?
Date Wed, 23 May 2018 15:49:39 GMT
Yeah, as Francis says, this should already be exposed via the expected 

Kevin -- can you share more details about what version(s) you're 
running? A sample program?

If you're running a new enough version, you can set the following log 
level via Log4j


which will give you a client-side dump of all of the "RPC data" being 
sent and received. This will help you see the frame_max_size that 
Francis alluded to :)

On 5/21/18 6:55 PM, Francis Chuang wrote:
> I am not familiar with the JDBC driver, but Phoenix uses Avatica[1] 
> under the hood. The protobuf documentation does state that it's possible 
> to control the number of rows returned in each response. See 
> frame_max_size under the FetchRequest[2] message. This may be something 
> that you can set in the JDBC driver.
> Francis
> [1]
> [2] 
> On 22/05/2018 8:39 AM, Kevin Minder wrote:
>> It is possible to decrease the chattiness of the Phoenix JDBC driver 
>> operating in HTTP mode?
>> We've tried using stmt.setFetchSize() but this appears to be ignored.
>> As it stands new we appear to be getting about 100 rows per POST which 
>> presents a number of throughput issues when the results can be 100,000 
>> rows.

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