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https://issues.apache.org/jira/browse/FLINK-8451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16374113#comment-16374113
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ASF GitHub Bot commented on FLINK-8451:
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GitHub user twalthr opened a pull request:
https://github.com/apache/flink/pull/5567
[FLINK-8451] [serializers] Make Scala tuple serializer deserialization more
failure tolerant
## What is the purpose of the change
Scala tuples (and thus also case classes) classes are serialized together
with their serializers. The `serialVersionUID` changed from Scala 2.10 to 2.11.
We need to ignore those changes when reading a serializer config snapshot.
## Brief change log
- Make deserialization more failure tolerant
## Verifying this change
- See `org.apache.flink.api.scala.runtime.TupleSerializerCompatibilityTest`
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: no
- The serializers: yes
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Yarn/Mesos, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? (yes / no)
- If yes, how is the feature documented? (not applicable / docs /
JavaDocs / not documented)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/twalthr/flink FLINK-8451
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/5567.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #5567
----
commit 3855837fe3d79c473c59ad892daabbb45f711c47
Author: Timo Walther <twalthr@...>
Date: 2018-02-22T16:22:54Z
[FLINK-8451] [serializers] Make Scala tuple serializer deserialization more
failure tolerant
----
> CaseClassSerializer is not backwards compatible in 1.4
> ------------------------------------------------------
>
> Key: FLINK-8451
> URL: https://issues.apache.org/jira/browse/FLINK-8451
> Project: Flink
> Issue Type: Bug
> Components: Type Serialization System
> Affects Versions: 1.4.0, 1.5.0
> Reporter: Timo Walther
> Assignee: Timo Walther
> Priority: Blocker
> Fix For: 1.5.0, 1.4.2
>
>
> There seems to be problems with the updated Scala version and the
> CaseClassSerializer that make it impossible to restore from a Flink 1.3
> savepoint.
> http://mail-archives.apache.org/mod_mbox/flink-user/201801.mbox/%3CCACk7FThV5itjSj_1fG9oaWS86z8WTKWs7abHvok6FnHzq9XT-A%40mail.gmail.com%3E
> http://mail-archives.apache.org/mod_mbox/flink-user/201801.mbox/%3C7CABB00B-D52F-4878-B04F-201415CEB658%40mediamath.com%3E
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