[HBASE-11821] [ImportTSV] Abstract labels tags creation into pluggable Interface

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.98.0
• Fix Version/s: 0.99.0, 0.98.6
• Component/s: mapreduce, security
• Hadoop Flags: Reviewed

Release Note

Added a facade org.apache.hadoop.hbase.mapreduce.CellCreator to create Cells for HFileOutputFormat. When working with HFileOutputFormat (with or with out visibility labels) in bulk load one can use this facade to make Cells with visibility tags.
Also we allow plugin an implementation of org.apache.hadoop.hbase.mapreduce.VisibilityExpressionResolver by configuring the the FQCN with key "hbase.mapreduce.visibility.expression.resolver.class". The default implementation will tag Cells with visibility label ordinal.

• Assignee: Anoop Sam John
• Reporter: Anoop Sam John
• Created: 26/Aug/14 04:13
• Updated: 06/Apr/18 17:51
• Resolved: 02/Sep/14 11:10

Description

HBASE-11553 abstracted out the VisibilityLabelService and using which one can go with String based labels tags instead of default ordinal based. In MapReduce side, ImportTSV also should support such an abstraction layer. This is applicable for HFileOutputFormat where mappers create Cells to be written to HFiles.

Also every Mapper (custom written also) dealing with such low level HBase things (Creation of tags and Cells) is not a good idea. This issue plan to provide a public audience Facade class to facilitate such Cell creation so that Mappers can just make use of them.