Stream Analytics

Azure Stream Analytics is a fully managed real-time stream computation service hosted in Microsoft Azure, which provides highly resilient, low latency, and scalable complex event processing of streaming data. Azure Stream Analytics enables developers to easily combine streams of data with historic records or reference data to derive business insights easily and quickly.

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  1. How to check for data loss in Stream Analytics

    ◾️Configuration
    In the steps Azure IoT Hub-Azure Stream Analytics-Azure Data Lake Storage, the data of Device-to-Cloud Messaging of Azure IoT Hub is accumulated in Table Storage and Data Lake Storage.

    ◾️Problem
    When Runtime Errors occur in Stream Analytics in this configuration, I can see the details of the error in the activity log, but I don't know how to determine if this error is causing data loss.

    ◾️Request
    Instead of comparing the number of input and output data of Stream Analytics, I would like to compare the contents of data output from the IoT Hub with the contents of data…

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  2. Duplicate Outputs

    If i want to insert data to sql table from different query then query editor won't allow to use same output to use in different queries even though destination must be same. It will be duplication of output.

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  3. SQL connection Failure

    When output failed due to SQL server unavailability then SA doesn't have re connection logic to connect back once SQL Server is up.

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  4. Bug: Reading the reference data test input from CSV file does not work. Switching back to JSON works well.

    Tried to test my query with IoT Hub as a Data Stream Source and SQL Database as a reference input. I have added the JSON message as a Data Stream test input and CSV file as the reference file input. Testing the query does not provide any results, neither errors. Converting the CSV file to JSON and re-running the test, works well.

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  5. BUG: Reference Data from SQL database not working well

    I have a query where I use JOIN clause to join the reference data. Running the test with test files works. Reference Input SQL Query works and retrieves the results so that query is not the problem.
    When testing the ASA Job with real data, it does not retrieve the results, even I send the same message as in the test. Switching reference input to JSON file from BLOB storage makes it working

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