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Troubleshooting event strategies

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If your event strategies do not work as expected, use the following tips to troubleshoot and solve the most common issues that you may experience when working with event strategies.

  • Event time format is invalid

    During the processing of a data flow work item that contains an event strategy, the following error is displayed: PropertyValueInvalid. TIME cannot cast the value (some string instead of date) to Date.

  • Event time is not provided

    During the processing of a data flow work item that contains an event strategy, the following error is displayed: Error during parsing time property. The time property is null. The property which was defined as a time provider is: TIME.

  • Incorrect order of events

    During the processing of a data flow work item that contains an event strategy, the system displays an error stating that the time stamp of an incoming event is older than the time stamp of the most recent event.

  • Missing event key property

    During the creation of an Event Strategy rule, the following error is displayed: Invalid event key. Please choose from available properties.

  • No decision data store nodes defined

    During processing of a data flow work item with the state management option set to Database, the following error is displayed: DNodeException: Unable to obtain session. Cassandra hasn't been started or is unavailable.

  • Tumbling time windows not emitting events

    During processing of an event strategy, the Window shape does not emit events even though the period of time for keeping events has expired.

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