As announced in the 2.21.0 release notes, the experimental gRPC API v2 has been
removed.
- [CHANGE] web: Remove APIv2. #7935
- [ENHANCEMENT] React UI: Implement missing TSDB head stats section. #7876
- [ENHANCEMENT] UI: Add Collapse all button to targets page. #6957
- [ENHANCEMENT] UI: Clarify alert state toggle via checkbox icon. #7936
- [ENHANCEMENT] Add rule_group_last_evaluation_samples and prometheus_tsdb_data_replay_duration_seconds metrics. #7737 #7977
- [ENHANCEMENT] Gracefully handle unknown WAL record types. #8004
- [ENHANCEMENT] Issue a warning for 64 bit systems running 32 bit binaries. #8012
- [BUGFIX] Adjust scrape timestamps to align them to the intended schedule, effectively reducing block size. Workaround for a regression in go1.14+. #7976
- [BUGFIX] promtool: Ensure alert rules are marked as restored in unit tests. #7661
- [BUGFIX] Eureka: Fix service discovery when compiled in 32-bit. #7964
- [BUGFIX] Don't do literal regex matching optimisation when case insensitive. #8013
- [BUGFIX] Fix classic UI sometimes running queries for instant query when in range query mode. #7984