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Support Article

Cassandra Parallel calls are not working for multiple tables



Cassandra Parallel calls are not working for multiple tables when user calls in an activity.

Error Messages

Not Applicable

Steps to Reproduce

  1. Create 7 Cassandra tables.
  2. Create 7 different connect rules. Each connect rule assign to single table parallel call.
  3. Call 7 connect rules in parallel in single activity.
  4. Notice It worked for first 4 connect rules. It is not working if exceeds 4 ( 5, 6, and 7 connect rules are not working for parallel option).

Root Cause

An issue in the custom application code or rules: From the top level activity user was calling child 7 child activities to call the individual Cassandra connectors in parallel and using the Connect-wait step.


The Connect-wait step should be defined in the top level activity after all the parallel connector call steps.

Any data transform rule should be applied only after the Connect-wait step.

This is to make sure all data from the parallel Connect rule execution is available before data transform rule is applied.
Suggest Edit

Published November 8, 2017 - Updated October 8, 2020

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