[jira] [Updated] (HADOOP-18215) Enhance WritableName to be able to return aliases for classes that use serializers

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-18215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated HADOOP-18215:
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    Labels: pull-request-available  (was: )

> Enhance WritableName to be able to return aliases for classes that use serializers
> ----------------------------------------------------------------------------------
>
>                 Key: HADOOP-18215
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18215
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Bryan Beaudreault
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> WritableName allows users shim in aliases for writables, in the case where a SequenceFile was written with a Writable class that has since been renamed or moved to another package. However, this requires that the aliased class extend Writable. 
> Separately it's possible to configure jobs with keys and values which don't actually extend Writable. Instead they are meant to be serialized/deserialized using the serialization classes defined in {{io.serializations}} config.
> Unfortunately, the current implementation does not support these key/value classes. All we need to do to support this is remove the {{.asSubclass(Writable.class)}} as is already the case for the default.



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