Merge pull request pingcap#1 from pingcap/master

Merge master code from pingcap repo

.bazelrc

@@ -0,0 +1,13 @@
+startup --host_jvm_args=-Xmx8g
+startup --unlimit_coredumps
+
+run --color=yes
+build:release --workspace_status_command=./build/print-workspace-status.sh --stamp
+build:release --config=ci
+build --incompatible_strict_action_env --incompatible_enable_cc_toolchain_resolution
+build:ci --remote_cache=http://172.16.4.3:8084/tidb
+test:ci --verbose_failures
+test:ci --test_timeout=180
+test:ci --test_env=GO_TEST_WRAP_TESTV=1 --test_verbose_timeout_warnings
+test:ci --remote_cache=http://172.16.4.3:8084/tidb
+test:ci --test_env=TZ=Asia/Shanghai --test_output=errors --experimental_ui_max_stdouterr_bytes=104857600

.codecov.yml

@@ -0,0 +1,47 @@
+codecov:
+  notify:
+    require_ci_to_pass: yes
+
+coverage:
+  precision: 4
+  round: down
+  range: "65...90"
+
+  status:
+    project: 
+      default:
+        threshold: 0.2 #Allow the coverage to drop by threshold%, and posting a success status.
+    patch: 
+      default:
+        target: 0% # trial operation
+    changes: no
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: yes
+      loop: yes
+      method: no
+      macro: no
+
+comment:
+  layout: "header, diff"
+  behavior: default
+  require_changes: no
+
+ignore:
+  - "LICENSES"
+  - "*_test.go"       
+  - ".git"
+  - "*.yml"
+  - "*.md"
+  - "cmd/.*"       
+  - "docs/.*"
+  - "vendor/.*"
+  - "ddl/failtest/.*"
+  - "ddl/testutil/.*"
+  - "executor/seqtest/.*"
+  - "metrics/.*"
+  - "expression/generator/.*"
+  - "br/pkg/mock/.*"
+

.gitattributes

@@ -0,0 +1,5 @@
+# Set the default behavior, in case people don't have core.autocrlf set.
+* text=auto
+
+# Declare files that will always have LF line endings on checkout.
+*.y text eol=lf

.github/CODEOWNERS

@@ -0,0 +1,4 @@
+# Require review from domain experts when the PR modified significant config files.
+/sessionctx/variable @pingcap/tidb-configuration-reviewer
+/config/config.toml.example @pingcap/tidb-configuration-reviewer
+/session/bootstrap.go @pingcap/tidb-configuration-reviewer

.github/ISSUE_TEMPLATE/bug-report.md

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+---
+name: "\U0001F41B Bug Report"
+about: As a User, I want to report a Bug.
+labels: type/bug
+---
+
+## Bug Report
+
+Please answer these questions before submitting your issue. Thanks!
+
+### 1. Minimal reproduce step (Required)
+
+<!-- a step by step guide for reproducing the bug. -->
+
+### 2. What did you expect to see? (Required)
+
+### 3. What did you see instead (Required)
+
+### 4. What is your TiDB version? (Required)
+
+<!-- Paste the output of SELECT tidb_version() -->
+

.github/ISSUE_TEMPLATE/enhancement.md

@@ -0,0 +1,7 @@
+---
+name: "\U0001F680 Enhancement"
+about: As a TiDB developer, I want to make an enhancement.
+labels: type/enhancement
+---
+
+## Enhancement

.github/ISSUE_TEMPLATE/feature-request.md

@@ -0,0 +1,19 @@
+---
+name: "\U0001F680 Feature Request"
+about: As a user, I want to request a New Feature on the product.
+labels: type/feature-request
+---
+
+## Feature Request
+
+**Is your feature request related to a problem? Please describe:**
+<!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
+
+**Describe the feature you'd like:**
+<!-- A clear and concise description of what you want to happen. -->
+
+**Describe alternatives you've considered:**
+<!-- A clear and concise description of any alternative solutions or features you've considered. -->
+
+**Teachability, Documentation, Adoption, Migration Strategy:**
+<!-- If you can, explain some scenarios how users might use this, situations it would be helpful in. Any API designs, mockups, or diagrams are also helpful. -->

.github/ISSUE_TEMPLATE/general-question.md

@@ -0,0 +1,20 @@
+---
+name: "\U0001F914 Ask a Question"
+about: I want to ask a question.
+labels: type/question
+---
+
+## General Question
+
+<!--
+
+Before asking a question, make sure you have:
+
+- Searched existing Stack Overflow questions.
+- Googled your question.
+- Searched open and closed [GitHub issues](https://github.com/pingcap/tidb/issues?utf8=%E2%9C%93&q=is%3Aissue)
+- Read the documentation:
+  - [TiDB Readme](https://github.com/pingcap/tidb)
+  - [TiDB Doc](https://github.com/pingcap/docs)
+
+-->

.github/ISSUE_TEMPLATE/performance-questions.md

@@ -0,0 +1,29 @@
+---
+name: "\U0001F947 Ask a Database Performance Question"
+about: I want to ask a database performance question.
+labels: type/question, type/performance
+---
+
+## Performance Questions
+
+- What version of TiDB are you using?
+<!-- You can try `tidb-server -V` or run `select tidb_version();` on TiDB to get this information -->
+
+- What's the observed and your expected performance respectively?
+
+- Have you compared TiDB with other databases? If yes, what's their difference?
+
+- For a specific slow SQL query, please provide the following information:
+    - Whether you analyzed the tables involved in the query and how long it is after you ran the last `ANALYZE`.
+    - Whether this SQL query always or occasionally runs slowly.
+    - The `EXPLAIN ANALYZE` result of this query if your TiDB version is higher than 2.1, or you can just provide the `EXPLAIN` result.
+    - The plain text of the SQL query and table schema so we can test it locally. It would be better if you can provide the dumped statistics information.
+        <!-- you can use `show create table ${involved_table}\G` to get the table schema.-->
+        <!-- use `curl -G "http://${tidb-server-ip}:${tidb-server-status-port}/stats/dump/${db_name}/${table_name}" > ${table_name}_stats.json` to get the dumped statistics of one involved table.-->
+    - The `EXPLAIN` result of the compared database. For MySQL, `EXPLAIN format=json`'s result will be more helpful.
+    - Other information that is useful from your perspective.
+
+- For a general performance question, e.g. the benchmark result you got by yourself is not expected, please provide the following information:
+    - Your cluster's topology architecture.
+    - A simple description of you workload.
+    - The metrics PDF generated from Grafana monitor. Remember to set the time range to the performance issue duration.

.github/labeler.yml

@@ -0,0 +1,42 @@
+sig/execution:
+  - distsql/*
+  - executor/*
+  - !executor/brie*
+  - util/chunk/*
+  - util/disk/*
+  - util/execdetails/*
+  - util/expensivequery/*
+  - util/filesort/*
+  - util/memory/*
+  - util/sqlexec/*
+
+component/expression:
+  - expression/*
+  - types/*
+
+sig/planner:
+  - planner/*
+  - bindinfo/*
+  - util/ranger/*
+  - util/plancodec/*
+
+component/statistics:
+  - statistics/*
+
+sig/sql-infra:
+  - ddl/*
+  - domain/*
+  - infoschema/*
+  - session/*
+  - server/*
+  - privilege/*
+  - plugin/*
+  - config/*
+  - meta/*
+  - owner/*
+
+component/config:
+  - config/*
+
+sig/migrate:
+  - executor/brie*

.github/licenserc.yml

@@ -0,0 +1,39 @@
+header:
+  license:
+    spdx-id: Apache-2.0
+    copyright-owner: PingCAP, Inc.
+  paths-ignore:
+    - 'docs/'
+    - 'br/'
+    - '.gitignore'
+    - '.gitattributes'
+    - '.golangci.yml'
+    - '.golangci_br.yml'
+    - 'LICENSES/'
+    - '**/BUILD.bazel'
+    - 'WORKSPACE'
+    - '.bazelrc'
+    - '**/*.key'
+    - '**/*.md'
+    - '**/*.json'
+    - '**/*.toml'
+    - '**/*.pem'
+    - '**/*.crt'
+    - '**/*.test'
+    - '**/*.result'
+    - '**/*.example'
+    - '**/*.patch'
+    - '**/*.bzl'
+    - '.codecov.yml'
+    - 'Jenkinsfile'
+    - '.editorconfig'
+    - 'hooks/pre-commit'
+    - '**/go.mod'
+    - '**/go.sum'
+    - 'LICENSE'
+    - '.github/'
+    - 'parser/'
+    - 'dumpling/'
+    - 'tidb-binlog/driver/example'
+    - 'tidb-binlog/proto/go-binlog/secondary_binlog.pb.go'
+  comment: on-failure

.github/pull_request_template.md

@@ -0,0 +1,60 @@
+<!--
+
+Thank you for contributing to TiDB!
+
+PR Title Format:
+1. pkg [, pkg2, pkg3]: what's changed
+2. *: what's changed
+
+-->
+
+### What problem does this PR solve?
+<!--
+
+Please create an issue first to describe the problem.
+
+There MUST be one line starting with "Issue Number:  " and 
+linking the relevant issues via the "close" or "ref".
+
+For more info, check https://pingcap.github.io/tidb-dev-guide/contribute-to-tidb/contribute-code.html#referring-to-an-issue.
+
+-->
+
+Issue Number: close #xxx
+
+Problem Summary:
+
+### What is changed and how it works?
+
+### Check List
+
+Tests <!-- At least one of them must be included. -->
+
+- [ ] Unit test
+- [ ] Integration test
+- [ ] Manual test (add detailed scripts or steps below)
+- [ ] No code
+
+Side effects
+
+- [ ] Performance regression: Consumes more CPU
+- [ ] Performance regression: Consumes more Memory
+- [ ] Breaking backward compatibility
+
+Documentation
+
+- [ ] Affects user behaviors
+- [ ] Contains syntax changes
+- [ ] Contains variable changes
+- [ ] Contains experimental features
+- [ ] Changes MySQL compatibility
+
+### Release note
+
+<!-- compatibility change, improvement, bugfix, and new feature need a release note -->
+
+Please refer to [Release Notes Language Style Guide](https://pingcap.github.io/tidb-dev-guide/contribute-to-tidb/release-notes-style-guide.html) to write a quality release note.
+
+```release-note
+None
+```

.github/workflows/integration-test-br-compatibility.yml

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+name: BR / Compatibility Test
+
+on:
+  push:
+  # merged git action
+    branches:
+      - master
+      - 'release-[0-9].[0-9]*'
+    paths:
+      - 'br/**'
+      - '!**.html'
+      - '!**.md'
+      - '!CNAME'
+      - '!LICENSE'
+      - '!br/docs/**'
+      - '!br/tests/**'
+      - '!br/docker/**'
+  # disable pull request only keep the merge action since it is very costly to run those tests
+  # pull_request:
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    timeout-minutes: 25
+    steps:
+
+    - uses: actions/checkout@v2
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.18
+
+    - name: Generate compatibility test backup data
+      timeout-minutes: 15
+      run: sh br/compatibility/prepare_backup.sh
+
+    - name: Start server
+      run: |
+        TAG=nightly PORT_SUFFIX=1 docker-compose -f br/compatibility/backup_cluster.yaml rm -s -v
+        TAG=nightly PORT_SUFFIX=1 docker-compose -f br/compatibility/backup_cluster.yaml build
+        TAG=nightly PORT_SUFFIX=1 docker-compose -f br/compatibility/backup_cluster.yaml up --remove-orphans -d
+        TAG=nightly PORT_SUFFIX=1 docker-compose -f br/compatibility/backup_cluster.yaml exec -T control go mod tidy 
+        TAG=nightly PORT_SUFFIX=1 docker-compose -f br/compatibility/backup_cluster.yaml exec -T control make build_br
+        TAG=nightly PORT_SUFFIX=1 docker-compose -f br/compatibility/backup_cluster.yaml exec -T control br/tests/run_compatible.sh run
+
+    - name: Collect component log
+      if: ${{ failure() }}
+      run: |
+        tar czvf ${{ github.workspace }}/logs.tar.gz /tmp/br/docker/backup_logs/*
+
+    - uses: actions/upload-artifact@v2
+      if: ${{ failure() }}
+      with:
+        name: logs
+        path: ${{ github.workspace }}/logs.tar.gz