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https://issues.apache.org/jira/browse/FLINK-7475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16248723#comment-16248723
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ASF GitHub Bot commented on FLINK-7475:
---------------------------------------
Github user bowenli86 commented on the issue:
https://github.com/apache/flink/pull/4963
Hi @yunfan123 Thanks for the feedback, and I agree with you.
Well, here's the problem: Flink seems to be using the
StringAppendTestOperator as merge operator from RocksDB, which added a ','
between values. But I didn't find how a java class for
StringAppendTestOperator.
Shall we mimic StringAppendTestOperator and concatenate the values with ','
ourselves? Do you have any more suggestions?
> support update() in ListState
> -----------------------------
>
> Key: FLINK-7475
> URL: https://issues.apache.org/jira/browse/FLINK-7475
> Project: Flink
> Issue Type: Improvement
> Components: Core, DataStream API, State Backends, Checkpointing
> Affects Versions: 1.4.0
> Reporter: yf
> Assignee: Bowen Li
> Fix For: 1.5.0
>
>
> If I want to update the list.
> I have to do two steps:
> listState.clear()
> for (Element e : myList) {
> listState.add(e);
> }
> Why not I update the state by:
> listState.update(myList) ?
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