[HBASE-7824] Improve master start up time when there is log splitting work

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.94.7
• Component/s: master
• Hadoop Flags: Reviewed

Release Note

Master now won't wait for existing or previously left log splitting work(except for ROOT and META region servers) finish before it can start up. Sometimes log splitting work could take more than minutes. In normal case, master node starts much faster than before when there is region server recovery work going on. The feature can be disabled by setting configuration value ""hbase.master.wait.for.log.splitting" to true.(default value is false)

• Assignee: Jeffrey Zhong
• Reporter: Jeffrey Zhong
• Created: 12/Feb/13 00:02
• Updated: 27/Apr/13 15:55
• Resolved: 10/Apr/13 23:07

Description

When there is log split work going on, master start up waits till all log split work completes even though the log split has nothing to do with meta region servers.

It's a bad behavior considering a master node can run when log split is happening while its start up is blocking by log split work.

Since master is kind of single point of failure, we should start it ASAP.

Issue Links

• duplicates: HBASE-8251 enable SSH before assign META on Master startup
• is blocked by: HBASE-8127 Region of a disabling or disabled table could be stuck in transition state when RS dies during Master initialization
• is related to: HBASE-7985 TestMasterFailover.testMasterFailoverWithMockedRITOnDeadRS fails frequently in 0.94