startStandbyService of namenode
2016-01-08 14:55:59 4 举报startStandbyService of namenode
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大纲/内容
Start Standby NameNode
doWork()
new EditLogTailer()
initSharedJournalsforRead()
Thread.sleep(sleepTimeMs)
new CheckpointerThread()
doTailEdits()
doCheckpoint()
standbyShouldCheckpoint==true
new EditLogTailerThread()
Thread.sleep(checkPeriod)
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