Description
Currently when expanding the KS cluster, the new node's partitions will be unavailable during the rebalance, which for large states can take a very long time, or for small state stores even more than a few ms can be a deal breaker for micro service use cases.
One workaround would be two execute the rebalance in two phases:
1) start running state store building on the new node
2) once the state store is fully populated on the new node, only then rebalance the tasks - there will still be a rebalance pause, but would be greatly reduced
Relates to: KAFKA-6144 - Allow state stores to serve stale reads during rebalance
Attachments
Issue Links
- contains
-
KAFKA-5578 Streams Task Assignor should consider the staleness of state directories when allocating tasks
- Closed
-
KAFKA-6039 Improve TaskAssignor to be more load balanced
- Closed
- is duplicated by
-
KAFKA-8019 Better Scaling Experience for KStream
- Resolved
- relates to
-
KAFKA-6144 Allow serving interactive queries from in-sync Standbys
- Resolved
-
KAFKA-8019 Better Scaling Experience for KStream
- Resolved
- links to
- mentioned in
-
Page Loading...