public static CommandExecutor.Method getFreeExecutor(Stage st) {
while (true) {
synchronized (executorsMap) {
try {
for (Map.Entry<CommandExecutor.Method, Stage> entry : executorsMap.entrySet()) {
if (!entry.getKey().isInUse() && entry.getValue() == st) {
CommandExecutor.Method m = entry.getKey();
m.setInUse(true);
return m;
}
}
LOG.info("All executors for stage " + st + " in use (will wait..)");
executorsMap.wait();
} catch (InterruptedException ie) {
return null;
}
}
}
}
