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https://issues.apache.org/jira/browse/FLINK-12688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16853886#comment-16853886
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Tzu-Li (Gordon) Tai commented on FLINK-12688:
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Thanks for the fix [~carp84]!
Merged -
1.9.0: b48f17b6c10ec98dd759c737cb93f7baf97b0366
1.8.1: d10cb37640333c0ef726b165b21a567dba606313
1.7.3: d13c5836891d42bc690cfeba067ec03d4581bbce
> Make serializer lazy initialization thread safe in StateDescriptor
> ------------------------------------------------------------------
>
> Key: FLINK-12688
> URL: https://issues.apache.org/jira/browse/FLINK-12688
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream, API / Type Serialization System
> Affects Versions: 1.6.4, 1.7.2, 1.8.0
> Reporter: Yu Li
> Assignee: Yu Li
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.7.3, 1.9.0, 1.8.1
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> As per
> [discussed|https://issues.apache.org/jira/browse/FLINK-11987?focusedCommentId=16832335&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16832335]
> in FLINK-11987, this JIRA aims at resolving the issue of
> {{StateDescriptor#initializeSerializerUnlessSet}} under race condition. More
> specified, we will assure no NPE thrown as well as the singleton of
> {{serializer}} when invoking {{initializeSerializerUnlessSet}} in parallel.
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