These release notes give an overview of the changes for the 2021-20.x to 2021-24.x releases of the VMware Aria Operations for Applications (previously known as Tanzu Observability by Wavefront) service.
2021-24.x Release Notes
- PromQL Improvement: Using global filters (key-value pairs for filtering results) is now supported for charts created with PromQL queries.
- Accessibility Improvements: We have made a number of keyboard navigation and focus indicator fixes.
- Documentation Improvements: Reorganized the information about alerts.
2021-23.x Release Notes
- cumulativePercentile() Function: For histograms that come from Prometheus, you can now use the
cumulativePercentile()function to calculate the cumulative percentile value. - List Variables: List variables now support non-alphanumeric characters.
- Alert Status for services: Active alerts are now shown on the Application Status page in all formats (grid view, table view, app map).
2021-22.x Release Notes
- CSV Export Improvements: Significant improvements to the CSV Export functionality for table charts make it easy to open the exported data in a spreadsheet.
2021-21.x Release Notes
- OpenTelemetry Exporter: The Tanzu Observability (Wavefront) exporter for OpenTelemetry allows you to send traces to Wavefront and use our comprehensive DT GUI to visualize trace data.
- PromQL Improvements: We made the following improvements to our PromQL implementation:
- Regular expression filters in PromQL are now supported.
- Regular subquery expressions in PromQL are now supported. The earlier limitations have been removed from our PromQL doc page.
- New Function: We now support a log2() function in addition to the existing log() and log10() functions.
- Alert API Change: Performing a PUT request with no changes against
/api/v2/alert/{id}no longer marks the alert as edited/auto resolved. - Search UI Improvements:
- You can explicitly exclude a keyword or a phrase from the search results by changing the equal sign to a not equal sign (≠). See Searching Wavefront for an example.
- When you search, we now show results that contain the current text string, as shown in the following screenshot.
2021-20.x Release Notes
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Performance Improvements: This release includes significant performance improvements for the query language. As part of this project, our engineers added single-side join improvements, strategy improvements for TopK, and more. Read our blog post: How Tanzu Observability Continuous Improvement Makes You More Successful for details.
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New Functions: We added the
retainDimension()andremoveDimension()functions, which allow you to keep or remove dimensions (point tags) that are in the results of your queries. -
New Operators: We add the
groupLeftandgroupRightoperators, which let you achieve many-to-one and one-to-many series matching, similar to the Many-to-one and one-to-many PromQL vector matches. To learn more about how to use these operators and how Wavefront processes output metadata from a series match, see Processing Output Metadata from a Series Match.