[jira] [Created] (FLINK-19438) Queryable State need implement both read-uncommitted and read-committed

[Shang Yuanchun (Jira)]

sheep created FLINK-19438:
-----------------------------

             Summary: Queryable State need implement both read-uncommitted and read-committed
                 Key: FLINK-19438
                 URL: https://issues.apache.org/jira/browse/FLINK-19438
             Project: Flink
          Issue Type: Wish
          Components: Runtime / Queryable State
            Reporter: sheep


Flink exposes its managed keyed (partitioned) state to the outside world and allows the user to query a job’s state from outside Flink. From a traditional database isolation-level viewpoint, the queries access uncommitted state, thus following the read-uncommitted isolation level.

I fully understand Flink provides read-uncommitted state query in order to query real-time state. But the read-committed state is also important (I cannot fully explain). From Flink 1.9, querying even modifying the state in Checkpoint has been implemented. The state in Checkpoint is equivalent to read-committed state.  So, users can query read-committed state via the state processor api.

*Flink should provide users  for configuration of isolation level of Queryable State by integration of the two levels of state query.*



--
This message was sent by Atlassian Jira
(v8.3.4#803005)