Ufuk Celebi created FLINK-2513:
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Summary: Extend state handle provider interface to list all state
handles
Key: FLINK-2513
URL: https://issues.apache.org/jira/browse/FLINK-2513
Project: Flink
Issue Type: Improvement
Components: Distributed Runtime
Reporter: Ufuk Celebi
This is a follow up issue to FLINK-2354.
In FLINK-2354 we use ZooKeeper to persist state handles. In certain failure
scenarios, there can be lingering state handles, which have not been written to
ZooKeeper, but which were already created.
These can be cleaned up on startup, if the state handle provider implementation
kept track of their state handles. With the current implementations it would be
possible, e.g. list the directory (file system) of no state is persistent (job
manager).
It would be fair enough have this as an optional operation.
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