[HBASE-25187] Improve SizeCachedKV variants initialization

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 2.2.7, 2.3.4, 2.5.0
• Hadoop Flags: Reviewed
• Assignee: ramkrishna.s.vasudevan
• Reporter: ramkrishna.s.vasudevan
• Created: 14/Oct/20 13:43
• Updated: 11/Apr/21 09:09
• Resolved: 24/Nov/20 16:48

Description

Currently in SizeCachedKV we get the rowlength and Key length from the buffers. This can be optimized because we can pass the keylen and row len while actually creating the cell while reading the cell from the block. Some times we see that the SizeCachedKV takes the max width in a flame graph - considering the fact we also do a sanity check on the created KV.

Issue Links

• links to: GitHub Pull Request #2550
• links to: GitHub Pull Request #2582