[HBASE-4469] Avoid top row seek by looking up ROWCOL bloomfilter

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.94.0
• Hadoop Flags: Reviewed
• Assignee: Liyin Tang
• Reporter: Liyin Tang
• Created: 23/Sep/11 17:41
• Updated: 12/Oct/12 05:34
• Resolved: 13/Oct/11 23:25

Description

The problem is that when seeking for the row/col in the hfile, we will go to top of the row in order to check for row delete marker (delete family). However, if the bloomfilter is enabled for the column family, then if a delete family operation is done on a row, the row is already being added to bloomfilter. We can take advantage of this factor to avoid seeking to the top of row.

Issue Links

• is required by: HBASE-4532 Avoid top row seek by dedicated bloom filter for delete family bloom filter
• requires: HBASE-4465 Lazy-seek optimization for StoreFile scanners