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From "Ufuk Celebi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-5778) Split FileStateHandle into fileName and basePath
Date Fri, 10 Feb 2017 16:15:42 GMT
Ufuk Celebi created FLINK-5778:
----------------------------------

             Summary: Split FileStateHandle into fileName and basePath
                 Key: FLINK-5778
                 URL: https://issues.apache.org/jira/browse/FLINK-5778
             Project: Flink
          Issue Type: Sub-task
          Components: State Backends, Checkpointing
            Reporter: Ufuk Celebi
            Assignee: Ufuk Celebi


Store the statePath as a basePath and a fileName and allow to overwrite the basePath. We cannot
overwrite the base path as long as the state handle is still in flight and not persisted.
Otherwise we risk a resource leak.

We need this in order to be able to relocate savepoints.

{code}
interface RelativeBaseLocationStreamStateHandle {

   void clearBaseLocation();

   void setBaseLocation(String baseLocation);

}
{code}

FileStateHandle should implement this and the SavepointSerializer should forward the calls
when a savepoint is stored or loaded, clear before store and set after load.




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