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https://issues.apache.org/jira/browse/HADOOP-7328?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Harsh J updated HADOOP-7328:
----------------------------
Resolution: Fixed
Status: Resolved (was: Patch Available)
This was committed to 0.23.0.
Not fixing for 1.x as its not critical.
MAPREDUCE-2584 depends on this but not vice versa.
> When a serializer class is missing, return null, not throw an NPE.
> ------------------------------------------------------------------
>
> Key: HADOOP-7328
> URL: https://issues.apache.org/jira/browse/HADOOP-7328
> Project: Hadoop Common
> Issue Type: Improvement
> Components: io
> Affects Versions: 0.20.2
> Reporter: Harsh J
> Assignee: Harsh J
> Labels: io, serialization
> Fix For: 0.23.0
>
> Attachments: 0.20-security-HADOOP-7328.r7.diff,
> 0.23-HADOOP-7328.r7.diff, HADOOP-7328.r1.diff, HADOOP-7328.r2.diff,
> HADOOP-7328.r3.diff, HADOOP-7328.r4.diff, HADOOP-7328.r4.diff,
> HADOOP-7328.r5.diff, HADOOP-7328.r6.diff, HADOOP-7328.r7.diff
>
>
> When you have a key/value class that's non Writable and you forget to attach
> io.serializers for the same, an NPE is thrown by the tasks with no
> information on why or what's missing and what led to it. I think a better
> exception can be thrown by SerializationFactory instead of an NPE when a
> class is not found accepted by any of the loaded ones.
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