spark-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Peter Liu <peter.p...@gmail.com>
Subject Re: Advice on multiple streaming job
Date Tue, 08 May 2018 15:44:55 GMT
Hi Dhaval,

I'm using Yarn scheduler (without the need to specify the port in the
submit). Not sue why the port issue here.

Gerard seem to have a good point here to have the multiple topics managed
within your application (to avoid the port issue) - Not sure if you're
using Spark Streaming or Spark Structured Streaming (see different
developer links for spark 2.2.0 below, but the same for the latest version).

https://spark.apache.org/docs/2.2.0/streaming-programming-guide.html
https://spark.apache.org/docs/latest/structured-streaming-programming-guide.html

I'm new to Spark streaming and I was curious what is the reason in your
case to have to run multiple spark service. Is this because of the "fact"
(just my question) that each service can only maintain one dstream?

I'm reading the following part from the guide above (
https://spark.apache.org/docs/2.2.0/streaming-programming-guide.html ) and
was wondering if having multiple topics (split one into multiple) would be
a good practice to enable multiple dstreams and thus better parallelism in
the data processing?

Quote:>> Note that each input DStream creates a single receiver (running on
a worker machine) that receives a single stream of data

Any comment from you guys would be much appreciated!

Cheers,

Peter


On Mon, May 7, 2018 at 5:08 AM, Dhaval Modi <dhavalmodi24@gmail.com> wrote:

> Hi Gerard,
>
> Our source is kafka, and we are using standard streaming api (DStreams).
>
> Our requirement is,  as we have 100's of kafka topics, Each topic sends
> different messages in JSON (complex) format. Topics structured are as per
> domain.
> Hence, each topic is independent of each other.
> These JSON messages needs to be flattened and stored in Hive.
>
> For these 100's of topic, currently we have 100's of jobs running
> independently and using different UI port.
>
>
>
> Regards,
> Dhaval Modi
> dhavalmodi24@gmail.com
>
> On 7 May 2018 at 13:53, Gerard Maas <gerard.maas@gmail.com> wrote:
>
>> Dhaval,
>>
>> Which Streaming API are you using?
>> In Structured Streaming, you are able to start several streaming queries
>> within the same context.
>>
>> kind regards, Gerard.
>>
>> On Sun, May 6, 2018 at 7:59 PM, Dhaval Modi <dhavalmodi24@gmail.com>
>> wrote:
>>
>>> Hi Susan,
>>>
>>> Thanks for your response.
>>>
>>> Will try configuration as suggested.
>>>
>>> But still i am looking for answer does Spark support running multiple
>>> jobs on the same port?
>>>
>>> On Sun, May 6, 2018, 20:27 Susan X. Huynh <xhuynh@mesosphere.io> wrote:
>>>
>>>> Hi Dhaval,
>>>>
>>>> Not sure if you have considered this: the port 4040 sounds like a
>>>> driver UI port. By default it will try up to 4056, but you can increase
>>>> that number with "spark.port.maxRetries". (
>>>> https://spark.apache.org/docs/latest/configuration.html) Try setting
>>>> it to "32". This would help if the only conflict is among the driver UI
>>>> ports (like if you have > 16 drivers running on the same host).
>>>>
>>>> Susan
>>>>
>>>> On Sun, May 6, 2018 at 12:32 AM, vincent gromakowski <
>>>> vincent.gromakowski@gmail.com> wrote:
>>>>
>>>>> Use a scheduler that abstract the network away with a CNI for instance
>>>>> or other mécanismes (mesos, kubernetes, yarn). The CNI will allow to
always
>>>>> bind on the same ports because each container will have its own IP. Some
>>>>> other solution like mesos and marathon can work without CNI , with host
IP
>>>>> binding, but will manage the ports for you ensuring there isn't any
>>>>> conflict.
>>>>>
>>>>> Le sam. 5 mai 2018 à 17:10, Dhaval Modi <dhavalmodi24@gmail.com>
a
>>>>> écrit :
>>>>>
>>>>>> Hi All,
>>>>>>
>>>>>> Need advice on executing multiple streaming jobs.
>>>>>>
>>>>>> Problem:- We have 100's of streaming job. Every streaming job uses
>>>>>> new port. Also, Spark automatically checks port from 4040 to 4056,
post
>>>>>> that it fails. One of the workaround, is to provide port explicitly.
>>>>>>
>>>>>> Is there a way to tackle this situation? or Am I missing any thing?
>>>>>>
>>>>>> Thanking you in advance.
>>>>>>
>>>>>> Regards,
>>>>>> Dhaval Modi
>>>>>> dhavalmodi24@gmail.com
>>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Susan X. Huynh
>>>> Software engineer, Data Agility
>>>> xhuynh@mesosphere.com
>>>>
>>>
>>
>

Mime
View raw message