[
https://issues.apache.org/jira/browse/FLINK-13948?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Flink Jira Bot closed FLINK-13948.
----------------------------------
Resolution: Auto Closed
> Fix loss of state for Identical Windows merging after initial merge
> -------------------------------------------------------------------
>
> Key: FLINK-13948
> URL: https://issues.apache.org/jira/browse/FLINK-13948
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream
> Affects Versions: 1.8.0
> Reporter: Scott Waller
> Priority: Minor
> Labels: auto-closed
>
> In the situation where there is a merging window, if we've performed a merge
> into a new window, and another window comes into the set that is exactly
> identical to the window created by the merge, the state window is replaced by
> the incoming window, and we lose the previous state.
>
> Example:
> Window (1,2) comes in to an empty set. The mapping is (1,2) -> (1,2)
> Window (1,3) comes into the set, we merge. The mapping is (1,3) -> (1,2)
> Window (1,3) comes into the set, we don't merge. The new mapping is (1,3) ->
> (1,3). This mapping will cause us to lose the previous state when its
> persisted.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
