Yu Li created FLINK-13803:
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Summary: Introduce SpillableHeapKeyedStateBackend and all
necessities
Key: FLINK-13803
URL: https://issues.apache.org/jira/browse/FLINK-13803
Project: Flink
Issue Type: Sub-task
Reporter: Yu Li
This JIRA aims at introducing a new {{SpillableHeapKeyedStateBackend}} which
will reuse most code of the {{HeapKeyedStateBackend}} (probably the only
difference is the spill-able one will register a {{HybridStateTable}}), and
allow using it in {{FsStateBackend}} and {{MemoryStateBackend}} (only as an
option, by default still {{HeapKeyedStateBackend}}) through configuration.
The related necessities include but are not limited to:
* A relative backend builder class
* Relative restore operation classes
* Necessary configurations for using spill-able backend
This should be the last JIRA after which the spill-able heap backend feature
will become runnable regardless of the stability and performance.
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