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Posted to issues@flink.apache.org by "Stephan Ewen (JIRA)" <ji...@apache.org> on 2016/01/25 15:25:40 UTC
[jira] [Closed] (FLINK-3267) Disable reference tracking in Kryo
fallback serializer
[ https://issues.apache.org/jira/browse/FLINK-3267?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Stephan Ewen closed FLINK-3267.
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> Disable reference tracking in Kryo fallback serializer
> ------------------------------------------------------
>
> Key: FLINK-3267
> URL: https://issues.apache.org/jira/browse/FLINK-3267
> Project: Flink
> Issue Type: Bug
> Components: Local Runtime
> Affects Versions: 0.10.1
> Reporter: Stephan Ewen
> Assignee: Stephan Ewen
> Priority: Blocker
> Fix For: 1.0.0
>
>
> Kryo runs extra logic to track and resolve repeated references to the same object (similar as JavaSerialization)
> We should disable reference tracking
> - reference tracking is costly
> - it is virtually always unnecessary in the datatypes used in Flink
> - most importantly, it is inconsistent with Flink's own serialization (which does not do reference tracking)
> - It may have problems if elements are read in a different order than they are written.
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