??????
??????????????????????????????????????????????????????????????????????500k??????????????????????????????????FLUSH_SLAVE_TIMEOUT??????????syncFlushTimeout=30000??????????FLUSH_SLAVE_TIMEOUT??????????????
public boolean waitForFlush(long timeout){
?? this.countDownLatch.await(timeout,TimeUnit.MILISECONDS);
return this.flushOK;
??
}
countDownLatch??????HAService#doWaitTransfer??req.wakeupCustomer(transferOK)??????
??????????????????slave??????master????????offset(????5??),????HAService#doWaitTransfer??5??????????????req.getNextOffset()????????transferOK=false??
????????????????????????
??????
