CODEWITHSUNDEEP
apache-flinkflink-streaming
yanghaogn
yanghaogn

Reputation: 863

Will Flink lose some old Keyed State when changing the parallelism

Will Flink lose some old Keyed State when changing the parallelism, like 2 -> 5, or 5 -> 3?

Upvotes: 0

Views: 361

Answers (1)

David Anderson
David Anderson

Reputation: 43707

No, Flink will not lose any state (keyed or otherwise) when rescaling. All that rescaling does is to keyed state is to redistribute the data by changing the mapping from key groups to task slots.

Upvotes: 1

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