[jira] [Created] (FLINK-13815) Implement the SpaceAllocator

[Shang Yuanchun (Jira)]

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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