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helper: request another PD if one of them is unavailable #35750

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merged 4 commits into from
Jun 28, 2022

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tangenta
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@tangenta tangenta commented Jun 27, 2022

What problem does this PR solve?

Issue Number: close #35708.

Problem Summary:

requestPD should try the PD hosts one by one until the request is successful.

What is changed and how it works?

Check List

Tests

  • 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

Please refer to Release Notes Language Style Guide to write a quality release note.

Fix an issue that TiDB cannot access `TIKV_REGION_STATUS` when one of the PD is down.

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ti-chi-bot commented Jun 27, 2022

[REVIEW NOTIFICATION]

This pull request has been approved by:

  • JmPotato
  • XuHuaiyu

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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@ti-chi-bot ti-chi-bot added release-note-none Denotes a PR that doesn't merit a release note. size/S Denotes a PR that changes 10-29 lines, ignoring generated files. release-note Denotes a PR that will be considered when it comes time to generate release notes. and removed release-note-none Denotes a PR that doesn't merit a release note. labels Jun 27, 2022
@ti-chi-bot ti-chi-bot added size/M Denotes a PR that changes 30-99 lines, ignoring generated files. and removed size/S Denotes a PR that changes 10-29 lines, ignoring generated files. labels Jun 28, 2022
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@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Jun 28, 2022
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sre-bot commented Jun 28, 2022

@ti-chi-bot ti-chi-bot added status/LGT2 Indicates that a PR has LGTM 2. and removed status/LGT1 Indicates that a PR has LGTM 1. labels Jun 28, 2022
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/merge

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This pull request has been accepted and is ready to merge.

Commit hash: cd1d4ac

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Jun 28, 2022
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/run-check_dev_2

@ti-chi-bot ti-chi-bot merged commit 8097685 into pingcap:master Jun 28, 2022
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sre-bot commented Jun 28, 2022

TiDB MergeCI notify

✅ Well Done! New fixed [1] after this pr merged.

CI Name Result Duration Compare with Parent commit
idc-jenkins-ci-tidb/integration-common-test 🔴 failed 2, success 9, total 11 18 min Existing failure
idc-jenkins-ci-tidb/common-test ✅ all 12 tests passed 11 min Fixed
idc-jenkins-ci-tidb/tics-test 🟢 all 1 tests passed 32 min Existing passed
idc-jenkins-ci/integration-cdc-test 🟢 all 35 tests passed 32 min Existing passed
idc-jenkins-ci-tidb/sqllogic-test-1 🟢 all 26 tests passed 7 min 20 sec Existing passed
idc-jenkins-ci-tidb/sqllogic-test-2 🟢 all 28 tests passed 6 min 49 sec Existing passed
idc-jenkins-ci-tidb/integration-ddl-test 🟢 all 6 tests passed 6 min 8 sec Existing passed
idc-jenkins-ci-tidb/mybatis-test 🟢 all 1 tests passed 3 min 32 sec Existing passed
idc-jenkins-ci-tidb/integration-compatibility-test 🟢 all 1 tests passed 3 min 10 sec Existing passed
idc-jenkins-ci-tidb/plugin-test 🟢 build success, plugin test success 4min Existing passed

morgo added a commit to morgo/tidb that referenced this pull request Jun 28, 2022
* upstream/master: (57 commits)
  types: fix incompatible implementation of jsonpath extraction (pingcap#35320)
  planner: fix TRACE PLAN TARGET = 'estimation' panic when meeting partition table (pingcap#35743)
  *: Add `testfork.RunTest` to run multiple tests in one function (pingcap#35746)
  sessionctx/variable: add tests to ensure skipInit can be removed (pingcap#35703)
  helper: request another PD if one of them is unavailable (pingcap#35750)
  metrics: add cached table related metrics to grafana panel (pingcap#34718)
  expression: use cloned RetType at `evaluateExprWithNull` when it may be changed. (pingcap#35759)
  executor: fix left join on partition table generate invalid lock key (pingcap#35732)
  readme: remove adopters (pingcap/docs#8725) (pingcap#35124)
  *: only add default value for final aggregation to fix the aggregate push down (partition) union case (pingcap#35443)
  planner: fix the wrong cost formula of MPPExchanger on cost model ver2 (pingcap#35718)
  sessionctx: support encoding and decoding statement context (pingcap#35688)
  txn: refactor ts acquisition within build and execute phases (pingcap#35376)
  ddl: for schema-level DDL method parameter is now XXXStmt (pingcap#35722)
  *: enable gofmt (pingcap#35721)
  planner: disable collate clause support for enum or set column (pingcap#35684)
  *: Provide a util to "pause" session in uint test (pingcap#35529)
  ddl: implement the core for multi-schema change (pingcap#35429)
  parser: XXXDatabaseStmt now use CIStr for DB name (pingcap#35668)
  *: remove real tikv test on github actions (pingcap#35710)
  ...
morgo added a commit to morgo/tidb that referenced this pull request Jun 29, 2022
…vars

* upstream/master: (28 commits)
  *: enable unconvert (pingcap#35821)
  log-backup: check timezone when using datatime format ts string (pingcap#35811)
  planner: support the leading hint for outer join (pingcap#35264)
  lightning: revert new policy of allocating rowid and refine it later (pingcap#35817)
  txn: manage the initialization of RCCheckTS by transaction context provider (pingcap#35554)
  ddl: make output field name in `show tables/databases stmt` compatible with mysql (pingcap#35136)
  txn: remove `legacy.SimpleTxnContextProvider` (pingcap#35667)
  txn: fix the error message if retry could not be used for rc check ts (pingcap#35474)
  *: support canceling DDL statements with KILL (pingcap#35803)
  lightning: avoid extracting db schema when schema file is not provided (pingcap#35783)
  *: enable all gosimples (pingcap#35762)
  tools/check: skip 'tests' directory in 'make ut' (pingcap#35800)
  metrics: add loading region cache duration (pingcap#34679)
  ddl: DROP TABLE/VIEW/SEQUENCE now use XXXStmt as parameter (pingcap#35741)
  types: fix incompatible implementation of jsonpath extraction (pingcap#35320)
  planner: fix TRACE PLAN TARGET = 'estimation' panic when meeting partition table (pingcap#35743)
  *: Add `testfork.RunTest` to run multiple tests in one function (pingcap#35746)
  sessionctx/variable: add tests to ensure skipInit can be removed (pingcap#35703)
  helper: request another PD if one of them is unavailable (pingcap#35750)
  metrics: add cached table related metrics to grafana panel (pingcap#34718)
  ...
@nolouch nolouch added the needs-cherry-pick-release-6.1 Should cherry pick this PR to release-6.1 branch. label Sep 13, 2022
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nolouch commented Sep 13, 2022

/run-cherry-picker

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cherry pick to release-6.1 in PR #37781

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When PD node down, can not query TIKV_REGION_STATUS
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