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. reference data

    Allow TIMESTAMP BY OVER with reference data

    3 votes
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  2. Managed identity for event hub output

    When the output is an event hub, we can currently only use SAS keys for authentication/authorization. Adding support for managed identity would significantly simplify and secure our setup.

    3 votes
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  3. More advance input path patterns for date and time.

    Currently, streaming inputs only support basic file path patterns for date and time. (yyyy/dd/mm, hh, etc). Unfortunately, many blob input prefixes do not fit that layout. For instance the native azure cloud likes write prefixes as follows: y={Year}/m={month}/d={day}/h={hour}/m={minute}.

    It would be good to be able to have finer grain control of the input pattern for time, similar to the way input patterns can be handled in data factory.

    2 votes
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  4. 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…

    2 votes
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  5. Monitor overall SU usage over time, not just per individual SA job.

    Spinning a new stream analytics job can occur at many times. Sometime you risk reaching your SU limit (200 by default). It happened to me... I am missing the ability to monitor how many SU I am currently using. Something similar to SU% utilization that is available per SA job- but on the subscription level.

    1 vote
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  6. 1 vote
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  7. Ability to see the events

    In the output boxes, one should be able to extract the top N events to see what data they produced

    1 vote
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  8. Support IoTHub.* in Azure Stream Analytics Tools for Visual Studio

    When authoring a query in the portal, I use the IoTHub object to get at items like IoTHub.EnqueuedTime (discussed here: https://docs.microsoft.com/en-us/azure/stream-analytics/stream-analytics-define-inputs#stream-data-from-iot-hub) These do not work in the ASA tools for Visual Studio.

    When you use stream data from an IoT Hub, you have access to the following metadata fields in your Stream Analytics query:
    Property
    Description
    EventProcessedUtcTime
    The date and time that the event was processed.
    EventEnqueuedUtcTime
    The date and time that the event was received by the IoT Hub.
    PartitionId
    The zero-based partition ID for the input adapter.
    IoTHub.MessageId
    An ID that's used to correlate two-way communication in…

    1 vote
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  9. 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.

    1 vote
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  10. 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.

    1 vote
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  11. Fieldnames are different at runtime

    At runtime the fieldnames are different from the fieldnames at testing, because when you test the query all the fieldnames are lowercased. This is very confusing and causes problems. The field names when testing the data should be the same as when running the ASA job.

    1 vote
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  12. Activity log - not showing actual error

    We had a conversion error and the Activity log only shows "OutputDataConversionError.TypeConversionError" which doesnt show the real reason.

    I had to enable Diagnostics logs to find real issue, which showed "Cannot convert from property 'multiplier' of type 'System.String' to column 'multiplier' of type 'System.Double'."

    If the real reason was in activity log would have saved me lots of time.

    1 vote
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  13. Sample data time-range selection

    The date displayed in the "Select time range" dialog is in US date format. My browser and OS are set to NZ format, the international normal of dd-mm-yyyy. Please change the date display to match.

    Also, the time input is rather finicky, suggest an improvement on this one too. Would be good to specify the time as UTC as well as local time.

    1 vote
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  14. 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.

    1 vote
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  15. Better diagnostics

    I can see input, run queries, and test the output, but no data comes into the output. Diagnostics won't show any content, so all that's left is to give up trying to get this to work.

    1 vote
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  16. 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

    1 vote
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