[FLINK-21167] Make StateTable snapshots iterable

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.13.0
• Component/s: Runtime / Checkpointing, Runtime / State Backends
• Labels: pull-request-available
• Assignee: Dawid Wysakowicz
• Reporter: Dawid Wysakowicz
• Created: 27/Jan/21 20:04
• Updated: 28/Jan/21 22:01
• Resolved: 28/Jan/21 22:01

Description

In order to implement an iterator required by a binary unified savepoint we need a way to iterate a snapshot. We should add an interface

@Internal
public interface IterableStateSnapshot<K, N, S> extends StateSnapshot {
    Iterator<StateEntry<K, N, S>> getIterator(int keyGroup);
}

that will be implemented by StateTableSnapshots.

Issue Links

• links to: GitHub Pull Request #14782