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https://issues.apache.org/jira/browse/HADOOP-18215?focusedWorklogId=760511&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-760511
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ASF GitHub Bot logged work on HADOOP-18215:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 21/Apr/22 23:44
Start Date: 21/Apr/22 23:44
Worklog Time Spent: 10m
Work Description: bbeaudreault opened a new pull request, #4215:
URL: https://github.com/apache/hadoop/pull/4215
### Description of PR
Very simple one-line change that allows users to optionally call addName for
key/value classes that may not inherit Writable (instead relying on
serialization).
### How was this patch tested?
Added two tests:
1. Simple unit test in TestWritableName
2. More of an integration test in TestSequenceFile which verifies that it
works to read and write with shimmed serializable classes.
Issue Time Tracking
-------------------
Worklog Id: (was: 760511)
Remaining Estimate: 0h
Time Spent: 10m
> 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
> 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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