tree 69ec63fe8af971f8dd8bac0e3b4d875f6d5a8034
parent c2b7ac72bae6baa10899a451ffe1bc01342ec8fe
author Hunter Lee <hulee@linkedin.com> 1572919474 -0800
committer Jiajun Wang <1803880+jiajunwang@users.noreply.github.com> 1581107062 -0800

Avoid redundant writes in AssignmentMetadataStore (#564)

For the WAGED rebalancer, we persist the cluster's mapping via AssignmentMetadataStore every pipeline. However, if there are no changes made to the new assignment from the old assignment, this write is not necessary. This diff checks whether they are equal and skips the write if old and new assignments are the same.