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skywalking/docs/en/changes/changes.md

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9.3.0

Project

  • Bump up the embedded swctl version in OAP Docker image.

OAP Server

  • Add component ID(133) for impala JDBC Java agent plugin and component ID(134) for impala server.
  • Use prepareStatement in H2SQLExecutor#getByIDs.(No function change).
  • Bump up snakeyaml to 1.32 for fixing CVE.
  • Fix DurationUtils.convertToTimeBucket missed verify date format.
  • Enhance LAL to support converting LogData to DatabaseSlowStatement.
  • [Breaking Change] Change the LAL script format(Add layer property).
  • Adapt ElasticSearch 8.1+, migrate from removed APIs to recommended APIs.
  • Support monitoring MySQL slow SQLs.
  • Support analyzing cache related spans to provide metrics and slow commands for cache services from client side
  • Optimize virtual database, fix dynamic config watcher NPE when default value is null
  • Remove physical index existing check and keep template existing check only to avoid meaningless retry wait in no-init mode.
  • Make sure instance list ordered in TTL processor to avoid TTL timer never runs.
  • Support monitoring PostgreSQL slow SQLs.
  • [Breaking Change] Support sharding MySQL database instances and tables by Shardingsphere-Proxy. SQL-Database requires removing tables log_tag/segment_tag/zipkin_query before OAP starts, if bump up from previous releases.
  • Fix meter functions avgHistogram, avgHistogramPercentile, avgLabeled, sumHistogram having data conflict when downsampling.
  • Do sorting readLabeledMetricsValues result forcedly in case the storage(database) doesn't return data consistent with the parameter list.
  • Fix the wrong watch semantics in Kubernetes watchers, which causes heavy traffic to API server in some Kubernetes clusters, we should use Get State and Start at Most Recent semantic instead of Start at Exact because we don't need the changing history events, see https://kubernetes.io/docs/reference/using-api/api-concepts/#semantics-for-watch.
  • Unify query services and DAOs codes time range condition to Duration.
  • [Breaking Change]: Remove prometheus-fetcher plugin, please use OpenTelemetry to scrape Prometheus metrics and set up SkyWalking OpenTelemetry receiver instead.
  • BugFix: histogram metrics sent to MAL should be treated as OpenTelemetry style, not Prometheus style: 
    (-infinity, explicit_bounds[i]] for i == 0
(explicit_bounds[i-1], explicit_bounds[i]] for 0 < i < size(explicit_bounds)
(explicit_bounds[i-1], +infinity) for i == size(explicit_bounds)
  • Support Golang runtime metrics analysis.
  • Add APISIX metrics monitoring
  • Support skywalking-client-js report empty service version and page path , set default version as latest and default page path as /(root). Fix the error fetching data (/browser_app_page_pv0) : Can't split endpoint id into 2 parts.
  • [Breaking Change] Limit the max length of trace/log/alarm tag's key=value, set the max length of column tags in tableslog_tag/segment_tag/alarm_record_tag and column query in zipkin_query and column tag_value in tag_autocomplete to 256. SQL-Database requires altering these columns' length or removing these tables before OAP starts, if bump up from previous releases.
  • Optimize the creation conditions of profiling task.
  • Lazy load the Kubernetes metadata and switch from event-driven to polling. Previously we set up watchers to watch the Kubernetes metadata changes, this is perfect when there are deployments changes and SkyWalking can react to the changes in real time. However when the cluster has many events (such as in large cluster or some special Kubernetes engine like OpenShift), the requests sent from SkyWalking becomes unpredictable, i.e. SkyWalking might send massive requests to Kubernetes API server, causing heavy load to the API server. This PR switches from the watcher mechanism to polling mechanism, SkyWalking polls the metadata in a specified interval, so that the requests sent to API server is predictable (~10 requests every interval, 3 minutes), and the requests count is constant regardless of the cluster's changes. However with this change SkyWalking can't react to the cluster changes in time, but the delay is acceptable in our case.
  • Optimize the query time of tasks in ProfileTaskCache.
  • Fix metrics was put into wrong slot of the window in the alerting kernel.
  • Support sumPerMinLabeled in MAL.
  • Support export Trace and Log through Kafka.

UI

  • Fix: tab active incorrectly, when click tab space
  • Add impala icon for impala JDBC Java agent plugin.
  • (Webapp)Bump up snakeyaml to 1.31 for fixing CVE-2022-25857
  • [Breaking Change]: migrate from Spring Web to Armeria, now you should use the environment variable name SW_OAP_ADDRESS to change the OAP backend service addresses, like SW_OAP_ADDRESS=localhost:12800,localhost:12801, and use environment variable SW_SERVER_PORT to change the port. Other Spring-related configurations don't take effect anymore.
  • Polish the endpoint list graph.
  • Fix styles for an adaptive height.
  • Fix setting up a new time range after clicking the refresh button.
  • Enhance the process topology graph to support dragging nodes.
  • UI-template: Fix metrics calculation in general-service/mesh-service/faas-function top-list dashboard.
  • Update MySQL dashboard to visualize collected slow SQLs.
  • Add virtual cache dashboard
  • Remove responseCode fields of all OAL sources, as well as examples to avoid user's confusion.
  • Remove All from the endpoints selector.
  • Enhance menu configurations to make it easier to change.
  • Update PostgreSQL dashboard to visualize collected slow SQLs.
  • Add Golang runtime metrics and cpu/memory used rate panels in General-Instance dashboard
  • Add gateway apisix menu
  • Query logs with the specific service ID
  • Bump d3-color from 3.0.1 to 3.1.0

Documentation

  • Add metadata-uid setup doc about Kubernetes coordinator in the cluster management.
  • Add a doc for adding menus to booster UI.
  • Move general good read blogs from Agent Introduction to Academy.
  • Add re-post for blog Scaling with Apache SkyWalking in the academy list.
  • Add re-post for blog Diagnose Service Mesh Network Performance with eBPF in the academy list.
  • Add Security Notice doc.
  • Add new docs for Report Span Attached Events data collecting protocol.
  • Add new docs for Record query protocol

All issues and pull requests are here