public void rebalance() {
int rebalanceDelay = 20;
int activateDelay = 10;
save();
// deactivate();
// timer.schedule(new ActivateTask(this), (rebalanceDelay + activateDelay) * 1000);
// prevent nimbus from getting confused
// if (localCluster != null) {
// deactivate();
// timer.schedule(new ActivateTask(this), (rebalanceDelay + activateDelay) * 1000);
// }
LOG.info("parallelism rebalance " + System.currentTimeMillis());
for (String component : parallelism.keySet()) {
LOG.info("parallelism " + component + " " + parallelism.get(component));
}
RebalanceOptions options = new RebalanceOptions();
options.set_num_executors(parallelism);
options.set_wait_secs(rebalanceDelay);
try {
System.out.println("REBALANCING: " + parallelism);
if (localCluster != null) {
localCluster.rebalance(topologyName, options);
} else {
NimbusClient client = NimbusClient.getConfiguredClient(stormConf);
client.getClient().rebalance(topologyName, options);
}
} catch (Exception e) {
System.out.println("rebalance() exception: " + e.toString());
}
}
/**
* rebalance one topology @@@ rebalance options hasn't implements
*
* <p>It is used to let workers wait several seconds to finish jobs
*
* @param topologyname String
* @param options RebalanceOptions
*/
@Override
public void rebalance(String topologyName, RebalanceOptions options)
throws NotAliveException, TException, InvalidTopologyException {
try {
checkTopologyActive(data, topologyName, true);
Integer wait_amt = null;
if (options != null && options.is_set_wait_secs()) {
wait_amt = options.get_wait_secs();
}
NimbusUtils.transitionName(data, topologyName, true, StatusType.rebalance, wait_amt);
} catch (NotAliveException e) {
String errMsg = "Rebalance Error, no this topology " + topologyName;
LOG.error(errMsg, e);
throw new NotAliveException(errMsg);
} catch (Exception e) {
String errMsg = "Failed to rebalance topology " + topologyName;
LOG.error(errMsg, e);
throw new TException(errMsg);
}
}