ExecutorService task failover implemented. #1291, #1120

redisson/src/main/java/org/redisson/RedissonExecutorService.java

@@ -92,7 +92,7 @@ import io.netty.util.internal.PlatformDependent;
  */
 public class RedissonExecutorService implements RScheduledExecutorService {
 
-    private static final Logger log = LoggerFactory.getLogger(RedissonExecutorService.class);
+    private static final Logger LOGGER = LoggerFactory.getLogger(RedissonExecutorService.class);
     
     private static final RemoteInvocationOptions RESULT_OPTIONS = RemoteInvocationOptions.defaults().noAck().expectResultWithin(1, TimeUnit.HOURS);
     
@@ -250,6 +250,7 @@ public class RedissonExecutorService implements RScheduledExecutorService {
                           + "redis.call('zrem', KEYS[2], unpack(expiredTaskIds));"
                           + "if retryInterval ~= false then "
                               + "local startTime = tonumber(ARGV[1]) + tonumber(retryInterval);"
+                          
                               + "for i = 1, #expiredTaskIds, 1 do "
                                   + "local name = expiredTaskIds[i];"
                                   + "local scheduledName = expiredTaskIds[i];"
@@ -266,7 +267,12 @@ public class RedissonExecutorService implements RScheduledExecutorService {
                                   + "if v[1] == expiredTaskIds[i] then "
                                       + "redis.call('publish', KEYS[3], startTime); "
                                   + "end;"
-                                  + "redis.call('rpush', KEYS[1], name);"
+                                    
+                                + "if redis.call('linsert', KEYS[1], 'before', name, name) < 1 then "
+                                    + "redis.call('rpush', KEYS[1], name); "
+                                + "else "
+                                    + "redis.call('lrem', KEYS[1], -1, name); "
+                                + "end; "
                               + "end; "
                           + "else "
                               + "redis.call('rpush', KEYS[1], unpack(expiredTaskIds));"
@@ -279,7 +285,7 @@ public class RedissonExecutorService implements RScheduledExecutorService {
                       + "end "
                       + "return nil;",
                       Arrays.<Object>asList(requestQueueName, schedulerQueueName, schedulerChannelName, tasksRetryIntervalName), 
-                      System.currentTimeMillis(), 100);
+                      System.currentTimeMillis(), 50);
             }
         };
         queueTransferService.schedule(getName(), task);
@@ -303,8 +309,6 @@ public class RedissonExecutorService implements RScheduledExecutorService {
             }
         });
     }
-
-    private long repeatInterval = 5000;
     
     @Override
     public void execute(Runnable task) {