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Kaviraj Kanagaraj bbfb13c3e4 Pin `chunk` and `index` format to `schema` version. (#10213) ... We pin all three `Chunk`, `HeadBlock` and `TSDB` Version to `schema` version in period config. This is the following mapping (after being discussed with @owen-d and @sandeepsukhani ) `v12` (current existing schema) - ChunkFormatV3 (UnorderedHeadBlock) + TSDBv2 `v13` (introducing new schema) - ChunkFormatV4 (UnorderedWithNonIndexedLabelsHeadBlockFmt) + TSDBv3 Note the new schema `v13` supports the latest chunk and index format. **NOTES for Reviewer** 1. General approach is we removed the idea of `index.LiveFormat`, `chunkenc.DefaultChunkFormat` and `chunkenc.DefaultHeadBlockFmt` and made following two changes. These variables were used before to tie chunk and tsdb formats specific to Loki versions. This PR remove that coupling and pin these formats to `schema` version instead. 1. These variables were replaced with explicit chunk and index formats within those packages (and it's tests) 2. If these variables were used outside it's own packages say by ingester, compactor, etc. Then we extract correct chunk and index versions from the `schema` config. 2. Add two methods to `periodConfig`. (1) `ChunkFormat()` returning chunk and head format tied to schema (2) `TSDBFormat()` returning tsdb format tied to schema. 2. Other ideas I thought of doing but didn't end up doing is make `ChunkFormat` and `IndexFormat` as separate type (rather than `byte` and `int` currently. Similar to `HeadBlockFmt` type). But didnt' do it eventually to keep the PR small and don't want to complicate with lots of changes. 4. Moved couple of test cases from `chunkenc` to `config` package, because the test case was actually testing methods on `schemaconfig` and it was creating cycling dependencies. --------- Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com>		2 years ago
..
cache	Loki: simplify the FetchChunks method and optimize the experimental l2 cache a little more (#10160)	2 years ago
client	Refactored forGivenIngestors to use DoUntilQuorum instead of Do (#9984)	2 years ago
fetcher	Upgrade to latest dskit main (#10300)	2 years ago
tests	Upgrade dskit to use packages migrated from weaveworks/common (#10164)	2 years ago
bigchunk.go	Upgrade `golangci-lint` and fix linting errors (#9601)	3 years ago
chunk.go	Upgrade dskit (#10249)	2 years ago
chunk_test.go	Pin `chunk` and `index` format to `schema` version. (#10213)	2 years ago
factory.go	Refactoring of the Loki storage (#5833)	4 years ago
interface.go	Upgrade dskit (#10249)	2 years ago
json_helpers.go	Upgrade `golangci-lint` and fix linting errors (#9601)	3 years ago