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ddl: support read records with copr for adding index #39191

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merged 10 commits into from
Nov 18, 2022
Merged

ddl: support read records with copr for adding index #39191

merged 10 commits into from
Nov 18, 2022

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tangenta
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@tangenta tangenta commented Nov 16, 2022 •
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What problem does this PR solve?

Issue Number: ref #35983

Problem Summary:

What is changed and how it works?

This PR supports using coprocessor to read the table records for adding index.

Check List

Tests

The test is covered by realtikvtest/addindex.

  • 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.

None

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ti-chi-bot commented Nov 16, 2022 •
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[REVIEW NOTIFICATION]

This pull request has been approved by:

  • Defined2014
  • wjhuang2016

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/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels Nov 16, 2022
@tangenta tangenta mentioned this pull request Nov 16, 2022
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Defined2014
Defined2014 reviewed Nov 17, 2022
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Could you add a performance report in release note?

Defined2014
Defined2014 reviewed Nov 17, 2022
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ddl/index_cop.go
return copCtx
}

func (c *copContext) buildTableScan(ctx context.Context, startTS uint64, start, end kv.Key) (distsql.SelectResult, error) {
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It looks very like

tidb/ddl/reorg.go

Line 438 in 706a646

func (dc *ddlCtx) buildDescTableScan(ctx *JobContext, startTS uint64, tbl table.PhysicalTable,
, could we combine those two functions?

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@tangenta tangenta Nov 17, 2022 •
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Sure, let's clean these up in another PR.

There are similar code in the following places:

  • (dc *ddlCtx) buildDescTableScan
  • (e *CheckIndexRangeExec) Open
  • (e *RecoverIndexExec) buildTableScan
  • (e *CleanupIndexExec) buildIndexScan

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Could you add a performance report in release note?

The performance gets a little bit worse and unstable than the previous implementation, because this PR builds & sends the coprocessor requests multiple times for the same task range.

I would like to post the performance report in the next PR, which reuses the same coprocessor request and makes read and write asynchronize.

@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Nov 18, 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 Nov 18, 2022
@ti-chi-bot ti-chi-bot added size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. and removed size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels Nov 18, 2022
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@Benjamin2037 Benjamin2037 reopened this Nov 18, 2022
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/hold

@ti-chi-bot ti-chi-bot added the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Nov 18, 2022
hawkingrei
hawkingrei reviewed Nov 18, 2022
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ddl/index_cop_test.go
// See the License for the specific language governing permissions and
// limitations under the License.

package ddl_test
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Can we create a new folder to put this test case? DDL put too much test cases in the folder.

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What is the problem?

Benjamin2037
Benjamin2037 approved these changes Nov 18, 2022
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LGTM

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/unhold

@ti-chi-bot ti-chi-bot removed the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Nov 18, 2022
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/merge

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

Commit hash: abdf626

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Nov 18, 2022
@ti-chi-bot ti-chi-bot merged commit e9253f7 into pingcap:master Nov 18, 2022
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sre-bot commented Nov 18, 2022

TiDB MergeCI notify

🔴 Bad News! [2] CI still failing after this pr merged.
These failed integration tests don't seem to be introduced by the current PR.

CI Name Result Duration Compare with Parent commit
idc-jenkins-ci/integration-cdc-test 🔴 failed 1, success 38, total 39 19 min Existing failure
idc-jenkins-ci-tidb/mybatis-test 🔴 failed 1, success 0, total 1 11 min Existing failure
idc-jenkins-ci-tidb/integration-common-test 🟢 all 17 tests passed 10 min Existing passed
idc-jenkins-ci-tidb/common-test 🟢 all 11 tests passed 9 min 36 sec Existing passed
idc-jenkins-ci-tidb/tics-test 🟢 all 1 tests passed 6 min 15 sec Existing passed
idc-jenkins-ci-tidb/sqllogic-test-2 🟢 all 28 tests passed 5 min 4 sec Existing passed
idc-jenkins-ci-tidb/sqllogic-test-1 🟢 all 26 tests passed 4 min 45 sec Existing passed
idc-jenkins-ci-tidb/integration-ddl-test 🟢 all 6 tests passed 4 min 27 sec Existing passed
idc-jenkins-ci-tidb/integration-compatibility-test 🟢 all 1 tests passed 2 min 37 sec Existing passed
idc-jenkins-ci-tidb/plugin-test 🟢 build success, plugin test success 4min Existing passed

@Defined2014 Defined2014 deleted the add-index-copr-read branch November 18, 2022 12:38
@tangenta tangenta mentioned this pull request Nov 18, 2022
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@tangenta tangenta mentioned this pull request Nov 23, 2022
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@lcwangchao lcwangchao mentioned this pull request Jan 31, 2023
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@Defined2014 Defined2014 Defined2014 approved these changes

@wjhuang2016 wjhuang2016 wjhuang2016 approved these changes

@Benjamin2037 Benjamin2037 Benjamin2037 approved these changes

@zimulala zimulala Awaiting requested review from zimulala

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