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Posted to common-issues@hadoop.apache.org by "Shilun Fan (Jira)" <ji...@apache.org> on 2024/01/21 15:20:00 UTC
[jira] [Comment Edited] (HADOOP-18215) Enhance WritableName to be able to return aliases for classes that use serializers
[ https://issues.apache.org/jira/browse/HADOOP-18215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17809050#comment-17809050 ]
Shilun Fan edited comment on HADOOP-18215 at 1/21/24 3:19 PM:
--------------------------------------------------------------
-3.3.6 release has been fixed, fix version removed 3.4.0-
was (Author: slfan1989):
3.3.6 release has been fixed, fix version removed 3.4.0
> 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
> Assignee: Bryan Beaudreault
> Priority: Minor
> Labels: pull-request-available
> Fix For: 3.4.0, 3.3.6
>
> Time Spent: 1.5h
> 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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