On 1/18/19, 1:33 PM, "Deshpande, Omkar" <[email protected]> wrote:
Hey Xinyu,
I am trying to implement "Batched RPC" as described in -
https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbeam.apache.org%2Fblog%2F2017%2F08%2F28%2Ftimely-processing.html&data=02%7C01%7Cdchen1%40linkedin.com%7C77e8e21b921042e5a8f908d67d8c8da8%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636834439965710970&sdata=wWeVLlQVp3udG2Xg70SovqB66feNxMxYLxxCZRsJIc0%3D&reserved=0
The documentation for GroupIntoBatches says "Batches will contain only
elements of a single key".
And my understanding is for "Batched RPC", I need a batch of keys. So, I am
not sure if I can use GroupIntoBatches.
On 1/18/19, 10:40 AM, "Xinyu Liu" <[email protected]> wrote:
This email is from an external sender.
sorry, the correct link to the first reference:
https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fapache%2Fbeam%2Fblob%2Fmaster%2Frunners%2Fsamza%2Fsrc%2Fmain%2Fjava%2Forg%2Fapache%2Fbeam%2Frunners%2Fsamza%2Fruntime%2FDoFnOp.java&data=02%7C01%7Cdchen1%40linkedin.com%7C77e8e21b921042e5a8f908d67d8c8da8%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636834439965710970&sdata=FQ9nJn1S7%2BRTiRwvwKrxAvFhTF076SNuY6RfUnsdkRI%3D&reserved=0
.
Thanks,
Xinyu
On Fri, Jan 18, 2019 at 10:35 AM Xinyu Liu <[email protected]>
wrote:
> Hi, Omkar,
>
> Your observation is correct. Currently bundle is implemented in a
> per-event basis (Code is DoFnOp.processElement,
>
https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdocs.google.com%2Fspreadsheets%2Fd%2F1pIUQ8J658B7GPNDt5dwiJBRQyWep1n2rXlkONyA6ZMM%2Fedit%23gid%3D1709587251&data=02%7C01%7Cdchen1%40linkedin.com%7C77e8e21b921042e5a8f908d67d8c8da8%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636834439965710970&sdata=Y48p6YZWoB5AaYgUeVHYrWD3JITAcjvVH5%2FgyZbIN44%3D&reserved=0).
> We are working on supporting bundles in Samza right now so in Beam we
can
> take advantage of it. Bundling is also critical to have better python
> performance so we are trying to get it out very soon (Feb-March).
>
> On the other hand, in java if you want to process in a batch fashion,
you
> can use the Beam GroupIntoBatches api (
>
https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbeam.apache.org%2Freleases%2Fjavadoc%2F2.0.0%2Forg%2Fapache%2Fbeam%2Fsdk%2Ftransforms%2FGroupIntoBatches.html&data=02%7C01%7Cdchen1%40linkedin.com%7C77e8e21b921042e5a8f908d67d8c8da8%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636834439965710970&sdata=ZgKm2XXoromrgxW%2BeEyALoZT%2BLR3fwh3eQkxM17rW5g%3D&reserved=0).
> This will group the elements into batches and then deliver to your
ParDo
> afterwards. Please let us know whether this works for you.
>
> Thanks,
> Xinyu
>
>
>
> On Fri, Jan 18, 2019 at 10:27 AM Daniel Chen <[email protected]>
wrote:
>
>> + Xinyu
>>
>> On 1/18/19, 10:05 AM, "Deshpande, Omkar" <[email protected]>
>> wrote:
>>
>> Hello,
>>
>> I am using Samza runner with Apache Beam. Is there any
documentation
>> available on how bundles are implemented in the Samza runner?
>> I have observed every Kafka record getting processed in its own
>> bundle. How can I get larger bundles?
>>
>> <beam.version>2.9.0 <samza.version>0.14.1
>>
>> Thanks,
>> Omkar
>>
>>
>>
