[HBASE-14628] [0.98] Save object creation for scanning with block encodings

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.98.16
• Hadoop Flags: Reviewed
• Assignee: Lars Hofhansl
• Reporter: Lars Hofhansl
• Created: 16/Oct/15 07:11
• Updated: 20/Nov/15 11:52
• Resolved: 20/Oct/15 20:56

Description

I noticed that (at least in 0.98 - master is entirely different) we create ByteBuffer just to create a byte[], which is then used to create a KeyValue.

We can save the creation of the ByteBuffer and hence save allocating an extra object for each KV we find by creating the byte[] directly.

In a Phoenix count(*) query that saved from 10% of runtime.

Sub-Tasks

• Remove unneeded API from EncodedSeeker: Closed