53 lines
2.5 KiB
Markdown
53 lines
2.5 KiB
Markdown
## 9.4.0
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#### Project
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#### OAP Server
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* Add `ServerStatusService` in the core module to provide a new way to expose booting status to other modules.
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* Adds Micrometer as a new component.(ID=141)
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* Refactor session cache in MetricsPersistentWorker.
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* Cache enhancement - don't read new metrics from database in minute dimensionality.
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```
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// When
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// (1) the time bucket of the server's latest stability status is provided
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// 1.1 the OAP has booted successfully
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// 1.2 the current dimensionality is in minute.
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// (2) the metrics are from the time after the timeOfLatestStabilitySts
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// (3) the metrics don't exist in the cache
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// the kernel should NOT try to load it from the database.
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//
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// Notice, about condition (2),
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// for the specific minute of booted successfully, the metrics are expected to load from database when
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// it doesn't exist in the cache.
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```
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* Remove the offset of metric session timeout according to worker creation sequence.
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* Correct `MetricsExtension` annotations declarations in manual entities.
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* Support component IDs' priority in process relation metrics.
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* Remove abandon logic in MergableBufferedData, which caused unexpected no-update.
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* Fix miss set `LastUpdateTimestamp` that caused the metrics session to expire.
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* Rename MAL rule `spring-sleuth.yaml` to `spring-micrometer.yaml`.
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* Fix memory leak in Zipkin API.
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* Remove the dependency of `refresh_interval` of ElasticSearch indices from `elasticsearch/flushInterval` config. Now,
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it uses `core/persistentPeriod` + 5s as `refresh_interval` for all indices instead.
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* Change `elasticsearch/flushInterval` to 5s(was 15s).
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* Optimize `flushInterval` of ElasticSearch BulkProcessor to avoid extra periodical flush in the continuous bulk streams.
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* An unexpected dot is added when exp is a pure metric name and expPrefix != null.
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* Support monitoring MariaDB.
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* Remove measure/stream specific interval settings in BanyanDB.
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* Add global-specific settings used to override global configurations (e.g `segmentIntervalDays`, `blockIntervalHours`) in BanyanDB.
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* Use TTL-driven interval settings for the `measure-default` group in BanyanDB.
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* Fix wrong group of non time-relative metadata in BanyanDB.
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#### UI
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#### Documentation
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* Remove Spring Sleuth docs, and add `Spring MicroMeter Observations Analysis` with the latest Java agent side
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enhancement.
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* Update `monitoring MySQL document` to add the `MariaDB` part.
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All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/160?closed=1)
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