Re: Round-Robin assignment when non-nullable record key

2018-05-31 Thread Matthias J. Sax
You can also pass in a custom partitioner instead of using the default
partitioner.


-Matthias

On 5/31/18 7:39 AM, Hans Jespersen wrote:
> Why don’t to just put the metadata in the header and leave the key null so it 
> defaults to round robin?
> 
> -hans
> 
>> On May 31, 2018, at 6:54 AM, M. Manna  wrote:
>>
>> Hello,
>>
>> I can see the this has been set as "KIP required".
>>
>> https://issues.apache.org/jira/browse/KAFKA-
>>
>> I have a use case where I simply want to use the key as some metadata
>> information (but not really for any messages), but ideally would like to
>> round-robin partition assignment. All I understand is, unless a hash
>> collision happens, a key will have a specific partition
>>
>> Could a PMC member please confirm if a KIP has been made available for
>> voting etc., or is this still pending?
>>
>> Also, is it meanwhile safe to extends DefaultPartitioner and use
>> round-robin condition for both Null/non-null keys as override?
>>
>> Regards,



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Re: Round-Robin assignment when non-nullable record key

2018-05-31 Thread Hans Jespersen
Why don’t to just put the metadata in the header and leave the key null so it 
defaults to round robin?

-hans

> On May 31, 2018, at 6:54 AM, M. Manna  wrote:
> 
> Hello,
> 
> I can see the this has been set as "KIP required".
> 
> https://issues.apache.org/jira/browse/KAFKA-
> 
> I have a use case where I simply want to use the key as some metadata
> information (but not really for any messages), but ideally would like to
> round-robin partition assignment. All I understand is, unless a hash
> collision happens, a key will have a specific partition
> 
> Could a PMC member please confirm if a KIP has been made available for
> voting etc., or is this still pending?
> 
> Also, is it meanwhile safe to extends DefaultPartitioner and use
> round-robin condition for both Null/non-null keys as override?
> 
> Regards,


Round-Robin assignment when non-nullable record key

2018-05-31 Thread M. Manna
Hello,

I can see the this has been set as "KIP required".

https://issues.apache.org/jira/browse/KAFKA-

I have a use case where I simply want to use the key as some metadata
information (but not really for any messages), but ideally would like to
round-robin partition assignment. All I understand is, unless a hash
collision happens, a key will have a specific partition

Could a PMC member please confirm if a KIP has been made available for
voting etc., or is this still pending?

Also, is it meanwhile safe to extends DefaultPartitioner and use
round-robin condition for both Null/non-null keys as override?

Regards,