Sophie Blee-Goldman created KAFKA-10079:
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Summary: Support high availability for in-memory stores
Key: KAFKA-10079
URL: https://issues.apache.org/jira/browse/KAFKA-10079
Project: Kafka
Issue Type: Bug
Components: streams
Reporter: Sophie Blee-Goldman
Assignee: Sophie Blee-Goldman
Fix For: 2.6.0
Now that KAFKA-9501 is fixed, we should make sure that KIP-441 will work with
in-memory stores.
Our current technique for reporting offsets, locking all task directories and
searching for offsets in the written checkpoint file, only works for persistent
stores. We should make sure to compute offset sums for in-memory stores as
well, for which we don't write a checkpoint file.
We should also improve the thread-level stickiness of stateful tasks, since we
don't handoff stores between threads and thus any in-memory state will be wiped
out if transferred between threads.
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