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https://issues.apache.org/jira/browse/HBASE-12048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14143488#comment-14143488
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Anoop Sam John commented on HBASE-12048:
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[~ram_krish]
IMO we can remove from 1.0 time. There were no discussion abt removing these
methods from Filter in HBASE-10930.
Whenever there is a Filter used in Scan, the system will call
transformCell(Cell v) . Normally Filters won't implement this method and so
method from FilterBase will be getting used. You can see a possible KV convert
here. In read path the nice optimization done with not copying the value part
in DBE wont get any adv as at this point we will forced to convert to KV and so
key and value copy. IMO we can aim for Cells only in read/write path in 1.0
itself. We are very close to that I believe. Correct Ram?
If there is strong objection in removing these KV based APIs from Filter from
1.0, we can do one thing. In all in built Filter implementation we can
implement transformCell(Cell v) just return the cell. This will avoid the
method from FilterBase being executed which might involve KV recreate.
> Remove deprecated APIs from Filter
> ----------------------------------
>
> Key: HBASE-12048
> URL: https://issues.apache.org/jira/browse/HBASE-12048
> Project: HBase
> Issue Type: Sub-task
> Components: regionserver
> Reporter: Anoop Sam John
> Assignee: Anoop Sam John
> Fix For: 2.0.0, 0.99.1
>
> Attachments: HBASE-12048.patch
>
>
> To be removed
> KeyValue transform(final KeyValue currentKV)
> KeyValue getNextKeyHint(final KeyValue currentKV)
> These are deprecated since 0.96 and can get removed from 1.0 time.
> Any objections?
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