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From Joseph Torres <joseph.tor...@databricks.com>
Subject Re: Spark 2.3 V2 Datasource API questions
Date Fri, 06 Apr 2018 15:41:11 GMT
Thanks for trying it out!

We haven't hooked continuous streaming up to query.status or
query.recentProgress yet - commit() should be called under the hood, we
just don't yet report that it is. I've filed SPARK-23886 and SPARK-23887 to
track the work to add those things.

The issue with printing warnings whenever the query is stopped is tracked
in SPARK-23444.

Jose

On Fri, Apr 6, 2018 at 8:29 AM, Thakrar, Jayesh <
jthakrar@conversantmedia.com> wrote:

> First of all thank you to the Spark dev team for coming up with the
> standardized and intuitive API interfaces.
>
> I am sure it will encourage integrating a lot more new datasource
> integration.
>
>
>
> I have been creating playing with the API and have some questions on the
> continuous streaming API
>
> (see https://github.com/JThakrar/sparkconn#continuous-streaming-datasource
> )
>
>
>
> *It seems that "commit" is never called *
>
>
>
> *query.status always shows the message below even after the query has been
> initialized, data has been streaming:*
>
> {
>
>   "message" : "Initializing sources",
>
>   "isDataAvailable" : false,
>
>   "isTriggerActive" : true
>
> }
>
>
>
>
>
> *query.recentProgress always shows an empty array:*
>
>
>
> Array[org.apache.spark.sql.streaming.StreamingQueryProgress] = Array()
>
>
>
> *And stopping a query always shows as if the tasks were lost involuntarily
> or uncleanly (even though close on the datasource was called) :*
>
> 2018-04-06 08:07:10 WARN  TaskSetManager:66 - Lost task 2.0 in stage 1.0
> (TID 7, localhost, executor driver): TaskKilled (Stage cancelled)
>
> 2018-04-06 08:07:10 WARN  TaskSetManager:66 - Lost task 1.0 in stage 1.0
> (TID 6, localhost, executor driver): TaskKilled (Stage cancelled)
>
> 2018-04-06 08:07:10 WARN  TaskSetManager:66 - Lost task 3.0 in stage 1.0
> (TID 8, localhost, executor driver): TaskKilled (Stage cancelled)
>
> 2018-04-06 08:07:10 WARN  TaskSetManager:66 - Lost task 0.0 in stage 1.0
> (TID 5, localhost, executor driver): TaskKilled (Stage cancelled)
>
> 2018-04-06 08:07:10 WARN  TaskSetManager:66 - Lost task 4.0 in stage 1.0
> (TID 9, localhost, executor driver): TaskKilled (Stage cancelled)
>
>
>
> Any pointers/info will be greatly appreciated.
>
>
>
>
>
>
>

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