private boolean prepareClusterState(ClusterServiceImpl clusterService) {
if (!preCheckClusterState(clusterService)) {
return false;
}
long until = Clock.currentTimeMillis() + mergeNextRunDelayMs;
while (clusterService.getClusterState() == ClusterState.ACTIVE) {
try {
clusterService.changeClusterState(ClusterState.FROZEN);
return true;
} catch (Exception e) {
String error = e.getClass().getName() + ": " + e.getMessage();
logger.warning("While freezing cluster state! " + error);
}
if (Clock.currentTimeMillis() >= until) {
logger.warning(
"Could not change cluster state to FROZEN in time. "
+ "Postponing merge process until next attempt.");
return false;
}
try {
TimeUnit.SECONDS.sleep(1);
} catch (InterruptedException e) {
logger.warning("Interrupted while preparing cluster for merge!");
// restore interrupt flag
Thread.currentThread().interrupt();
return false;
}
}
return false;
}
@Override
public void shutdown(TransactionOptions options) {
changeClusterState(ClusterState.PASSIVE, options);
shutdownNodes();
}
@Override
public void shutdown() {
changeClusterState(ClusterState.PASSIVE);
shutdownNodes();
}