Hi Before filling a jira, I would like to check this with you. It seems that the major compaction behavior changed between 0.90.x and 0.92 (not taking about all the nice stuff you added there...)
Effectively when i trigger a major compaction (via hbase shell or ui) when other compactions (minor) are running (because i had a lot of storefiles and a big compactionQueueSize), the major compaction is not executed. While in 0.90.X major_compact command was executed immediately after any current compaction. Mikael.S
