Commits on Mar 21, 2024

1. changefeedccl: use new bulk oracle for changefeed planning …

   This change uses the BulkOracle by default as part of changefeed
   planning, instead of the bin packing oracle. This will allow changefeeds
   to have plans that randomly assign spans to any replica, including
   followers if enabled, following locality filter constraints.
   
   A new cluster setting, `changefeed.balanced_distribution.enabled`,
   protects this change. When enabled (by default), changefeeds will use
   the new BulkOracle for planning. If disabled, changefeeds will use the
   previous bin packing oracle.
   
   Epic: none
   Fixes: cockroachdb#119777
   Fixes: cockroachdb#114611
   
   Release note (enterprise change): Changefeeds now use the BulkOracle for
   planning, which distributes work evenly across all replica in the
   locality filter, including followers if enabled. This is enabled by
   default with the cluster setting
   `changefeed.balanced_distribution.enabled`. If disabled, changefeed
   planning reverts to its previous bin packing oracle.

   

   rharding6373 committed Mar 21, 2024
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