@Override
public void start() {
LOG.info("QueryMaster start");
queryHeartbeatThread = new QueryHeartbeatThread();
queryHeartbeatThread.start();
clientSessionTimeoutCheckThread = new ClientSessionTimeoutCheckThread();
clientSessionTimeoutCheckThread.start();
finishedQueryMasterTaskCleanThread = new FinishedQueryMasterTaskCleanThread();
finishedQueryMasterTaskCleanThread.start();
super.start();
}
@Override
public void stop() {
if (queryMasterStop.getAndSet(true)) {
return;
}
if (queryHeartbeatThread != null) {
queryHeartbeatThread.interrupt();
}
if (clientSessionTimeoutCheckThread != null) {
clientSessionTimeoutCheckThread.interrupt();
}
if (finishedQueryMasterTaskCleanThread != null) {
finishedQueryMasterTaskCleanThread.interrupt();
}
super.stop();
LOG.info("QueryMaster stop");
if (queryMasterContext.getWorkerContext().isYarnContainerMode()) {
queryMasterContext.getWorkerContext().stopWorker(true);
}
}