Optimizations for full-text / sparse search

[chasingegg]

this is the umbrella issue for full-text/sparse search, including search optimization, build optimization, index compression, code cleanup, bug fixes, etc.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions. Rotten issues close after 30d of inactivity. Reopen the issue with /reopen.

[chasingegg]

/reopen

[sre-ci-robot]

@chasingegg: Reopened this issue.

Details

In response to this:

/reopen

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.