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Posted to issues@storm.apache.org by "Jungtaek Lim (JIRA)" <ji...@apache.org> on 2017/06/29 03:08:00 UTC

[jira] [Created] (STORM-2605) Versioning State

Jungtaek Lim created STORM-2605:
-----------------------------------

             Summary: Versioning State
                 Key: STORM-2605
                 URL: https://issues.apache.org/jira/browse/STORM-2605
             Project: Apache Storm
          Issue Type: Improvement
          Components: storm-client
            Reporter: Jungtaek Lim


From upcoming STORM-2369 we're just breaking compatibility with State structure. 

In this case it would be better to provide two features:

1. Fail fast if version mismatch occurs between stored state and current KV state implementation, and provide proper error message to let users know the reason of failure.
2. Migration tool to migrate old state to the new state

Since STORM-2369 is the first time to break compatibility so I strictly don't think we should resolve this issue along with STORM-2369, but still better to have this feature in future.



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