Stefan Richter created FLINK-8360:
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Summary: Implement task-local state recovery
Key: FLINK-8360
URL: https://issues.apache.org/jira/browse/FLINK-8360
Project: Flink
Issue Type: New Feature
Components: State Backends, Checkpointing
Reporter: Stefan Richter
Assignee: Stefan Richter
Fix For: 1.5.0
This issue tracks the development of recovery from task-local state. The main
idea is to have a secondary, local copy of the checkpointed state, while there
is still a primary copy in DFS that we report to the checkpoint coordinator.
Recovery can attempt to restore from the secondary local copy, if available, to
save network bandwidth. This requires that the assignment from tasks to slots
is as sticky is possible.
For starters, we will implement this feature for all managed keyed states and
can easily enhance it to all other state types (e.g. operator state) later.
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