Release v0.3.0-nightly-20230530

What's Changed

• refactor: add "table engine" to datanode heartbeat. by @QuenKar in #1616
• feat: distributed planner basic by @waynexia in #1599
• chore: truncate route-table by @fengjiachun in #1619
• feat: support /api/v1/label/<label_name>/values from Prometheus by @gitccl in #1604
• fix(table-procedure): Open table in RegisterCatalog state by @evenyag in #1617
• feat: time_zone variable for mysql connections by @sunng87 in #1607
• feat: Trigger flush based on global write buffer size by @evenyag in #1585
• feat: region failover procedure by @MichaelScofield in #1558
• refactor: remove useless error by @v0y4g3r in #1624
• refactor: move rpc's commons to common-meta by @fengjiachun in #1625
• chore: fix code styling by @WenyXu in #1623
• fix: fix doesn't release closed regions issue by @WenyXu in #1596
• chore: add grpc query interceptor by @shuiyisong in #1626
• feat!: reorganize the storage layout by @killme2008 in #1609
• feat: implement CloseRegionHandler by @WenyXu in #1569
• feat: more configurable logging levels by @sunng87 in #1630
• feat: add cache for catalog kv backend by @Fengys123 in #1592
• refactor: move the common part of the heartbeat response handler to common by @WenyXu in #1627
• chore: add boxed error for custom error map by @shuiyisong in #1635
• chore: add metrics for table route getting by @Fengys123 in #1636
• refactor: set the filters for testing logs by @MichaelScofield in #1637
• feat(servers): Add metrics based on axum's example by @evenyag in #1638
• feat: add invalidate table cache handler by @WenyXu in #1633
• fix: install python3-pip in Dockerfile by @yaoyinnan in #1644
• fix: fix typo by @WenyXu in #1649
• feat: add metrics for ingested row count by @sunng87 in #1645
• feat: support to load missing region by @WenyXu in #1651
• feat: Record process metrics by @evenyag in #1646
• refactor: Holds histogram in the timer to avoid clone labels if possible by @evenyag in #1653
• chore: reduce the number of requests for meta by @Fengys123 in #1647
• feat: impl literal only PromQL query by @waynexia in #1641
• fix: fix type casting issue by @WenyXu in #1652
• refactor: move code out of loop by @WenyXu in #1657
• feat: window inferer by @v0y4g3r in #1648
• feat: broadcast with mailbox by @fengjiachun in #1661
• fix: invalidate table route cache by @WenyXu in #1663
• refactor: add scan_to_stream() to Table trait to postpone the stream generation by @waynexia in #1639
• fix: clippy warning by @waynexia in #1669
• feat: update table metadata in lock by @MichaelScofield in #1634
• feat: Add request type and result code to grpc metrics by @evenyag in #1664
• feat: sql dialect for different protocols by @killme2008 in #1631

New Contributors

• @QuenKar made their first contribution in #1616
• @yaoyinnan made their first contribution in #1644

Full Changelog: v0.3.0-nightly-20230522...v0.3.0-nightly-20230530