[jira] [Updated] (FLINK-9174) The type of state created in ProccessWindowFunction.proccess() is inconsistency

["Sihua Zhou (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-9174?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sihua Zhou updated FLINK-9174:
------------------------------
    Priority: Critical  (was: Major)

> The type of state created in ProccessWindowFunction.proccess() is inconsistency
> -------------------------------------------------------------------------------
>
>                 Key: FLINK-9174
>                 URL: https://issues.apache.org/jira/browse/FLINK-9174
>             Project: Flink
>          Issue Type: Bug
>          Components: State Backends, Checkpointing
>    Affects Versions: 1.5.0
>            Reporter: Sihua Zhou
>            Assignee: Sihua Zhou
>            Priority: Critical
>             Fix For: 1.5.0
>
>
> The type of state created from windowState and globalState in {{ProcessWindowFunction.process()}} is inconsistency. For detail,
> {code}
> context.windowState().getListState(); // return type is HeapListState or RocksDBListState
> context.globalState().getListState(); // return type is UserFacingListState
> {code}
> This cause the problem in the following code,
> {code}
> Iterable<T> iterableState = listState.get();
>  if (terableState.iterator().hasNext()) {
>    for (T value : iterableState) {
>      value.setRetracting(true);
>      collector.collect(value);
>    }
>    state.clear();
> }
> {code}
> If the {{listState}} is created from {{context.globalState()}} is fine, but when it created from {{context.windowState()}} this will cause NPE. I met this in 1.3.2 but I found it also affect 1.5.0.



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