Yu Li created FLINK-13815:
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Summary: Implement the SpaceAllocator
Key: FLINK-13815
URL: https://issues.apache.org/jira/browse/FLINK-13815
Project: Flink
Issue Type: Sub-task
Components: Runtime / State Backends
Reporter: Yu Li
As described in the design doc, we need a {{SpaceAllocator}} to allocate space
on off-heap/disk to store the spilled key-group data.
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