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i have to get data from a server and i can only get 100 tables at a time from it. I have to run the pipeline again if there are more than 100 tables in it. how can i check whether the server is empty or has data left in it? how to automate the checking process

 

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Best answer by Rishi 27 June 2022, 16:08

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Rishi
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hi @Mahesh Assuming that you have JDBC Multitable consumer Origin, since you are reading from multiple table.

You can leverage the event record no-more-data generated by JDBC Multitable Consumer origin. ref : here

 

sdc.event.type Event type. Uses the following type:
  • no-more-data - Generated when the origin completes processing all data returned by the queries for all tables.
  • schema-finished - Generated when the origin completes processing all rows within a schema.
  • table-finished - Generated when the origin completes processing all rows within a table.

 

With the help of event stream you can stop a pipeline after processing all available data.  
more detailed can be found here 

 https://docs.streamsets.com/portal/platform-datacollector/latest/datacollector/UserGuide/Solutions/StopPipeline.html#concept_kff_ykv_lz

 

And have scheduler configured in control hub to trigger this job periodically 

https://docs.streamsets.com/portal/platform-controlhub/controlhub/UserGuide/Scheduler/ScheduledTasks_Creating.html#task_y5k_f1g_ndb

M
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what if i’m using rest api calls to get data. how to know whether the server is empty? does the above solution works for this case too?

 

Bikram
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In Rest api , you can configure for the error code 400 , in this case it will throw error message which signifies no. more data in api.

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