[HBASE-3963] Schedule all log-spliiting at startup all at once

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.92.0
• Hadoop Flags: Reviewed
• Assignee: Prakash Khemani
• Reporter: Prakash Khemani
• Created: 08/Jun/11 16:08
• Updated: 20/Nov/15 11:53
• Resolved: 13/Jun/11 22:13

Description

When distributed log splitting is enabled then it is better to call splitLog() for all region servers simultaneously. A large number of splitlog tasks will get scheduled - one for each log file. But a splitlog-worker (region server) executes only one task at a time and there shouldn't be a danger of DFS overload. Scheduling all the tasks at once ensures maximum parallelism.