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https://issues.apache.org/jira/browse/FLINK-15897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17031497#comment-17031497
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Hequn Cheng commented on FLINK-15897:
-------------------------------------
Resolved in 1.11.0 via 5c1d7e4fa0879857b051b3b6f2ab587888df9826
> Defer the deserialization of the Python UDF execution results
> -------------------------------------------------------------
>
> Key: FLINK-15897
> URL: https://issues.apache.org/jira/browse/FLINK-15897
> Project: Flink
> Issue Type: Improvement
> Components: API / Python
> Reporter: Dian Fu
> Assignee: Dian Fu
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.11.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Currently, the Python UDF execution results are deserialized and then
> buffered in a collection when received from the Python worker. The
> deserialization could be deferred when sending the execution results to the
> downstream operator. That's to say, it buffers the serialized bytes instead
> of the deserialized Java objects in the buffer. This could reduce the memory
> footprint of the Java operator.
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