How to use

org.apache.twill.internal.zookeeper.ReentrantDistributedLock

constructor

@Override
public Lock createLock(String name) {
 return new ReentrantDistributedLock(zkClient, "/lock/" + name);
}

@Override
public Lock createLock(String name) {
 return new ReentrantDistributedLock(zkClient, "/lock/" + name);
}

@Override
protected Lock getLock(StreamId streamId) {
 // It's ok to create new locks every time as it's backed by ZK for distributed lock
 ZKClient lockZKClient = ZKClients.namespace(zkClient, "/" + Constants.Service.STREAMS + "/locks");
 return new ReentrantDistributedLock(lockZKClient, streamId.toString());
}

this.logAppenderInitializer = injector.getInstance(LogAppenderInitializer.class);
this.zkClient = injector.getInstance(ZKClientService.class);
this.shutdownLock = new ReentrantDistributedLock(zkClient, "/lock/" + Constants.Service.MASTER_SERVICES);