jackjlli opened a new pull request #8441: URL: https://github.com/apache/pinot/pull/8441
## Description This PR adds `retainInstancesSequence` feature to table rebalance to minimize data movement between instances within the pool. Related issue: https://github.com/apache/pinot/issues/8371 E.g. if the old instances are: [I1, I2, I3, I4] and the new instances become: [I1, I3, I4, I5, I6], the removed instance is I2 and the newly added instances are I5 and I6. The position of I2 would be replaced by I5, the new remaining I6 would be appended to the tail. Thus, the new order would be [I1, I5, I3, I4, I6]. The copy of instancesPartitions would be kept in the ZNRecord if this feature is enabled, so that this copy can be reused for the next calculation. ## Upgrade Notes Does this PR prevent a zero down-time upgrade? (Assume upgrade order: Controller, Broker, Server, Minion) * [ ] Yes (Please label as **<code>backward-incompat</code>**, and complete the section below on Release Notes) Does this PR fix a zero-downtime upgrade introduced earlier? * [ ] Yes (Please label this as **<code>backward-incompat</code>**, and complete the section below on Release Notes) Does this PR otherwise need attention when creating release notes? Things to consider: - New configuration options - Deprecation of configurations - Signature changes to public methods/interfaces - New plugins added or old plugins removed * [ ] Yes (Please label this PR as **<code>release-notes</code>** and complete the section on Release Notes) ## Release Notes <!-- If you have tagged this as either backward-incompat or release-notes, you MUST add text here that you would like to see appear in release notes of the next release. --> <!-- If you have a series of commits adding or enabling a feature, then add this section only in final commit that marks the feature completed. Refer to earlier release notes to see examples of text. --> ## Documentation <!-- If you have introduced a new feature or configuration, please add it to the documentation as well. See https://docs.pinot.apache.org/developers/developers-and-contributors/update-document --> -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@pinot.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@pinot.apache.org For additional commands, e-mail: commits-h...@pinot.apache.org
