/**
* Opens the connection to the worker. And start the heartbeat thread.
*
* @throws IOException if a non-Tachyon exception occurs
*/
private synchronized void connectOperation() throws IOException {
if (!mConnected) {
LOG.info("Connecting to {} worker @ {}", (mIsLocal ? "local" : "remote"), mAddress);
TProtocol binaryProtocol =
new TBinaryProtocol(AuthenticationUtils.getClientTransport(mTachyonConf, mAddress));
mProtocol = new TMultiplexedProtocol(binaryProtocol, getServiceName());
mClient = new BlockWorkerClientService.Client(mProtocol);
try {
mProtocol.getTransport().open();
} catch (TTransportException e) {
LOG.error(e.getMessage(), e);
return;
}
mConnected = true;
// only start the heartbeat thread if the connection is successful and if there is not
// another heartbeat thread running
if (mHeartbeat == null || mHeartbeat.isCancelled() || mHeartbeat.isDone()) {
final int interval = mTachyonConf.getInt(Constants.USER_HEARTBEAT_INTERVAL_MS);
mHeartbeat =
mExecutorService.submit(
new HeartbeatThread(HeartbeatContext.WORKER_CLIENT, mHeartbeatExecutor, interval));
}
}
}
