Forum Discussion

tony_hudnut's avatar
tony_hudnut
New Contributor
22 days ago

No output preview using a specific groundplex

A simple JSON Generator snap will provide the output preview on one GroundPlex, and not provide the output preview on another GroundPlex.  Setting all look the same.  I'm guessing there is something obscure going on and need your help.

Thank you very much

1 Reply

  • Scott's avatar
    Scott
    Admin
    21 days ago

     

    Hi Tony - I input your question in SnapGPT. For your reference you can access SnapGPT in the upper nav bar of the Designer here:

    Keep in mind SnpGPT can help you investigate any specific aspect of this issue, such as examining your GroundPlex configuration or helping you create a diagnostic pipeline.

    Common Causes and Solutions:

    1. GroundPlex Configuration Differences

    The most likely cause is differences in GroundPlex configurations between the environments:

    • JVM Settings: Different heap memory allocations or JVM parameters
    • Node Resources: Varying CPU, memory, or disk space availability
    • Network Configuration: Different proxy settings, firewall rules, or network latency
    • SnapLogic Version: Different SnapLogic runtime versions between GroundPlex instances

    2. Account and Authentication Issues

    • Account Configuration: Verify that the same account is being used on both GroundPlex instances
    • Permissions: Check if the GroundPlex has proper permissions to execute preview operations
    • Authentication: Ensure authentication credentials are properly configured

    3. Preview Data Execution Settings

    Check the Snap Execution setting in your JSON Generator:

    • Ensure it's set to "Validate & Execute" (not "Execute only")
    • "Execute only" mode disables preview data generation during validation

    4. GroundPlex-Specific Limitations

    Some GroundPlex environments may have:

    • Resource constraints that prevent preview execution
    • Security policies that restrict certain operations
    • Custom configurations that affect Snap behavior

    5. Debugging Steps

    1. Compare GroundPlex Settings:
      • Check the GroundPlex configuration in both environments
      • Compare JVM settings, memory allocation, and node configurations
    2. Verify Snap Configuration:
      • Ensure the JSON Generator has identical settings in both environments
      • Check the "Snap execution" dropdown is set to "Validate & Execute"
    3. Check GroundPlex Logs:
      • Review the GroundPlex logs for any errors or warnings during preview execution
      • Look for memory issues, timeout errors, or permission problems
    4. Test with Simple Pipeline:
      • Create a minimal pipeline with just the JSON Generator
      • Test preview functionality to isolate the issue
    5. Resource Monitoring:
      • Monitor CPU, memory, and disk usage during preview attempts
      • Check if the GroundPlex is under resource pressure

    6. Immediate Workarounds

    • Use Cloud Execution: Temporarily run the pipeline on the cloud to verify functionality
    • Full Execution: Use "Execute only" mode and check the actual pipeline output
    • Alternative Testing: Use a different Snap type to test preview functionality