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v0.9.3 Release - Major MultiSchema Features
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@velvia velvia released this 27 Jan 19:58
0.9.3
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Learn about vigilant mode.
  • MultiSchema support. Each metric will now have a type: counter, gauge, histogram, or summary. Types are used for optimizing downsampling and queries, and optimizing storage for histograms. Metadata queries will return a new type label describing the time series type, and filtering by metric type is possible. Type is auto-detected in the open source gateway when using Telegraf as input source.
  • Support for first class histograms: transports and stores histogram buckets as a single entity and time series, rather than a separate time series for each bucket. Leads to huge savings for storage as well as Kafka. See the README notes about First-Class Histograms for more details on query changes.
  • Many PromQL functions added, including predict_linear, stddev, stdvar, and others
  • More efficient index and chunk persistence and querying to/from Cassandra

Due to changes in the format of keys, indices and other tables in Cassandra, this new release will not be able to read from older Cassandra tables and truncation or deploy to new environment will be necessary.

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