Create VersionedWritable interface that allows a class version and an instance
version
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Key: HBASE-4353
URL: https://issues.apache.org/jira/browse/HBASE-4353
Project: HBase
Issue Type: New Feature
Reporter: Ted Yu
Here is comment from Lars (HBASE-2195):
When we did versioning for a project I used to work on a long time ago, we had
maintained a class version *and* an instance version. We might need both.
The class should know which version it is, but also it is useful in many
scenarios to ask the instance what specific version it is on.
I.e. we need an interface with two methods: One to get the class version, one
to get the instance version.
This would apply to HLogKey which is able to read entries without explicit
version.
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