* feat: remote write metric task
* chore: pass stanalone task to frontend
* chore: change name to system metric
* fix: add header and rename to export metrics
* refactor: open regions in background
* feat: add status code of RegionNotReady
* feat: use RegionNotReady instead of RegionNotFound for a registering region
* chore: apply suggestions from CR
* feat: add status code of RegionBusy
* feat: return RegionBusy for mutually exclusive operations
* refactor: refactor wal config
* test: update tests related to wal
* feat: introduce kafka wal config
* chore: augment proto with wal options
* feat: augment region open request with wal options
* feat: augment mito region with wal options
* feat: augment region create request with wal options
* refactor: refactor log store trait
* feat: add skeleton for kafka log store
* feat: generalize building log store when starting datanode
* feat: integrate wal options to region write
* chore: minor update
* refactor: remove wal options from region create/open requests
* fix: compliation issues
* chore: insert wal options into region options upon initializing region server
* chore: integrate wal options into region options
* chore: fill in kafka wal config
* chore: reuse namespaces while writing to wal
* chore: minor update
* chore: fetch wal options from region while handling truncate/flush
* fix: region options test
* fix: resolve some review conversations
* refactor: serde with wal options
* fix: resolve some review conversations
* feat: introduce wal config and kafka config
* feat: introduce kafka topic manager and selector
* feat: introduce region wal options
* chore: build region wal options upon starting meta srv
* feat: integrate region wal options allocator into table meta allocator
* chore: add wal config to metasrv.example.toml
* chore: add region wal options map to create table procedure
* feat: augment region create request with wal options
* feat: augment DatanodeTableValue with region wal options map
* chore: encode region wal options upon constructing table creator
* feat: persist region wal options when creating table meta
* fix: sqlness test
* chore: set default wal provider to raft-engine
* refactor: refactor wal options
* chore: update wal options allocator
* refactor: rename region wal options to wal options
* chore: update usages of region wal options
* chore: add some comments to kafka
* chore: fill in kafka config
* test: add tests for serde wal config
* test: add tests for wal options
* refactor: refactor wal options allocator to enum
* refactor: store wal options into the request options instead
* fix: typo
* fix: typo
* refactor: move wal options map to region info
* refactor: refacto serialization and deserialization of wal options
* refactor: use serde_json to encode wal options
* chore: rename wal_options_map to region_wal_options
* chore: resolve some review comments
* fix: typo
* refactor: replace kecab-case with snake_case
* fix: sqlness and converage tests
* fix: typo
* fix: coverage test
* fix: coverage test
* chore: resolve some review conversations
* fix: resolve some review conversations
* chore: format comments in metasrv.example.toml
* chore: update import style
* feat: integrate wal options allocator to standalone mode
* test: add compatible test for OpenRegion
* test: add compatible test for UpdateRegionMetadata
* chore: remove based suffix from topic selector type
* feat: sql with influxdb v1 result format
* chore: add unit tests
* feat: minor refactor
* chore: by comment
* chore; u128 to u64 since serde can't deser u128 in enum
* chore: by comment
* chore: apply suggestion
* chore: revert suggestion
* chore: try again
---------
Co-authored-by: dennis zhuang <killme2008@gmail.com>
* refactor: use downgrading the region instead of closing region
* feat: enhance the tests for alive keeper
* feat: add a metric to track region lease expired
* chore: apply suggestions from CR
* chore: enable logging for test_distributed_handle_ddl_request
* refactor: simplify lease keeper
* feat: add metrics for lease keeper
* chore: apply suggestions from CR
* chore: apply suggestions from CR
* chore: apply suggestions from CR
* refactor: move OpeningRegionKeeper to common_meta
* feat: register operating regions to MemoryRegionKeeper
* feat: add random weigted choose in load_based selector
* fix: meta cannot save heartbeats when cluster have no region
* chore: print some log
* chore: remove unused code
* cr
* add some logs when filter result is empty
* feat: add page cache
* docs: update mito config toml
* feat: impl CachedPageReader
* feat: use cache reader to read row group
* feat: do not fetch data if we have pages in cache
* chore: return if nothing to fetch
* feat: enlarge page cache size
* test: test write read parquet
* test: test cache
* docs: update comments
* test: fix config api test
* feat: cache metrics
* feat: change default page cache size
* test: fix config api test
* feat: opentsdb row protocol
* fix: added commnets for num of rows and failure if output is not of affecetd rows
* fix: added extra 1 to number of columns
* fix: avoided cloning datapoints, took ownership instead
* fix: avoided cloning datapoints, took ownership instead
* fix: changed vecotr slice to vector
* fix: remove clone
* fix: combined datapoints and requests with zip instead of enumerating
---------
Co-authored-by: Ubuntu <ubuntu@ip-172-31-43-183.us-east-2.compute.internal>