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https://issues.apache.org/jira/browse/HBASE-18649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16141357#comment-16141357
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ramkrishna.s.vasudevan commented on HBASE-18649:
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bq.Ya the ExtendedCell having direct APIs for doing these. But we have utils
which take Cell and serialize also right? The format will be KV format.
One thing is that we can safely allow the KV format as the mapper/reducer's
value class. And safely do a type cast to ExtendedCell to use those APIs. But
in other places it is not straight forward. We may have to do some KV INFRA
sizes to make up what we want.
And more over the important thing is that KeyValue that is getting used now is
[email protected]
So making ExtendedCell as the mappers output value class in my opinion is not
for the users to set it. If they want to set it let them set it to KV which is
anyway of type ExtendedCell.
> Deprecate KV Usage in MR to move to Cells in 3.0
> ------------------------------------------------
>
> Key: HBASE-18649
> URL: https://issues.apache.org/jira/browse/HBASE-18649
> Project: HBase
> Issue Type: Improvement
> Components: mapreduce
> Affects Versions: 2.0.0-alpha-2
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
> Fix For: 2.0.0, 3.0.0, 2.1.0
>
>
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