[ZOOKEEPER-373] One thread per bookie

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.1
• Fix Version/s: 3.2.0
• Component/s: contrib-bookkeeper
• Hadoop Flags: Reviewed
• Assignee: Flavio Paiva Junqueira
• Reporter: Flavio Paiva Junqueira
• Created: 09/Apr/09 15:41
• Updated: 08/Jul/09 20:24
• Resolved: 17/Apr/09 21:29

Description

Currently, if a client is writing to multiple ledgers and these ledgers overlap on some bookie, there will be as many threads for such a bookie as the number of ledgers writing to it. Consequently, if a client writes to many ledgers simultaneously, it may end up with an undesirably large number of threads. I don't have a concrete proposal yet, but I suspect it is as simple as keeping an array of BookieHandle objects, one per bookie, and having each BookieHandle object shared by all ledgers.