[HBASE-7672] Merging compaction requests in the queue for same store

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 0.94.4
• Component/s: Compaction
• Assignee: Unassigned
• Reporter: Chunhui Shen
• Created: 25/Jan/13 08:26
• Updated: 16/Jun/22 01:20
• Resolved: 26/Jan/13 03:56

Description

With a high write presesure, we could found many compaction requests for same store in the compaction queue.

I think we could merge compaction requests for same store to increase compaction efficiency greately. It is so in 0.90 version because doing compacting files selection only when executing compaction

e.g.

SmallCompation active count:1,Queue:
regionName=abctest,90F9AUIPK4YO47W55WS4R8RSKGDFNRYBNB79COYKHNQD9F62G7,1359104485823.f05568c159940b8a72bd84c988388ad3., storeName=c1, fileCount=4, fileSize=371.1m (212.0m, 53.0m, 53.0m, 53.0m), priority=15, time=56843340270506608
regionName=abctest,90F9AUIPK4YO47W55WS4R8RSKGDFNRYBNB79COYKHNQD9F62G7,1359104485823.f05568c159940b8a72bd84c988388ad3., storeName=c1, fileCount=4, fileSize=330.4m (171.3m, 53.0m, 53.0m, 53.0m), priority=11, time=56843401092063608

We could merge these two compaction requests

Issue Links

• relates to: HBASE-5479 Postpone CompactionSelection to compaction execution time