[HBASE-15879] Introduce Key interface

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Abandoned
• Assignee: Unassigned
• Reporter: ramkrishna.s.vasudevan
• Created: 23/May/16 18:05
• Updated: 01/Jul/22 21:32
• Resolved: 01/Jul/22 21:32

Description

Introduce an interface called Key and allow Cell implementations to implement this Key interface for cases like KeyValue, OffheapKeyValue and DBE cells (Except prefix tree) so that we can avoid copies when we deal with only Cells in case of block index creations (like ROOT, Bloom etc). Helps in reduction of garbage also.

Issue Links

• is depended upon by: HBASE-15554 StoreFile$Writer.appendGeneralBloomFilter generates extra KV
• is related to: HBASE-15179 Cell/DBB end-to-end on the write-path

Sub-Tasks

• Ensure write path uses Key interface: Open