Parallel create index

[small-turtle-1]

What problem does this PR solve?

Add corresponding issue link with summary if exists -->

Issue link:

What is changed and how it works?

Code changes

• Has Code change
• Has CI related scripts change

Check List

Tests

• Unit test
• Integration test
• Manual test (knn performance test)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Note for reviewer

[small-turtle-1]

@mergify queue

[mergify]

queue

❌ Command disallowed due to command restrictions in the Mergify configuration.

• sender-permission>=write

[JinHai-CN]

@mergify queue

[mergify]

queue

🛑 The pull request has been removed from the queue default

Pull request #425 has been dequeued due to failing checks or checks timeout.

You can take a look at Queue: Embarked in merge queue check runs for more details.

In case of a failure due to a flaky test, you should first retrigger the CI.
Then, re-embark the pull request into the merge queue by posting the comment
@mergifyio refresh on the pull request.

[JinHai-CN]

@mergify queue

[mergify]

queue

🛑 The pull request has been removed from the queue default

Pull request #425 has been dequeued due to failing checks or checks timeout.

You can take a look at Queue: Embarked in merge queue check runs for more details.

In case of a failure due to a flaky test, you should first retrigger the CI.
Then, re-embark the pull request into the merge queue by posting the comment
@mergifyio refresh on the pull request.