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https://issues.apache.org/jira/browse/HBASE-880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12635503#action_12635503
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Jim Kellerman commented on HBASE-880:
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To clarify my previous comment (and correct a mistake):
The overall idea is to replace all gets and getRows with RowResult
get(RowOperation).
All updates, deleteAll and deleteFamily can be replaced with void
commit(RowOperation)
- ColumnOperation is used for get and getRow. It has no value field so it
cannot be used for updates.
- ColumnOperation should have a single byte array for family:member, since
family names are printable.
- 'family:member' specifies a specific member of a family
- 'family:' means the Cell in which the member name is null
- 'family' (no delimiter) means all members in the family
- a completely empty byte array means all members of all families
- ColumnMutations are a replacement for BatchOperation in which they subclass
ColumnOperation and add only the value.
- an empty value specifies a delete just as BatchOperation does today
> Improve the current client API by creating new container classes
> ----------------------------------------------------------------
>
> Key: HBASE-880
> URL: https://issues.apache.org/jira/browse/HBASE-880
> Project: Hadoop HBase
> Issue Type: Improvement
> Components: client
> Reporter: Jean-Daniel Cryans
> Assignee: Jean-Daniel Cryans
> Fix For: 0.19.0
>
> Attachments: hbase-880-v1.patch, hbase-880-v2.patch
>
>
> The current API does not scale very well. For each new feature, we have to
> add many methods to take care of all the overloads. Also, the need to batch
> row operations (gets, inserts, deletes) implies that we have to manage some
> "entities" like we are able to do with BatchUpdate but not with the other
> operations. The RowLock should be an attribute of such an entity.
> The scope of this jira is only to replace current API with another
> feature-compatible one, other methods will be added in other issues.
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