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https://issues.apache.org/jira/browse/FLINK-12697?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yu Li updated FLINK-12697:
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Summary: Support on-disk state storage for spill-able heap backend (was:
Support on-disk state storage for HeapKeyedStateBackend)
> Support on-disk state storage for spill-able heap backend
> ---------------------------------------------------------
>
> Key: FLINK-12697
> URL: https://issues.apache.org/jira/browse/FLINK-12697
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / State Backends
> Reporter: Yu Li
> Assignee: Yu Li
> Priority: Major
>
> We need to store state on disk after spilling, and to support this, we need:
> 1. A data structure to efficiently support copy-on-write for asynchronous
> snapshot
> 2. An allocator to allocate and manage chunks from the memory mapped file(s)
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