ec.balance: use specific collection names

weed/shell/command_ec_balance.go

@@ -26,7 +26,7 @@ func (c *commandEcBalance) Name() string {
 func (c *commandEcBalance) Help() string {
 	return `balance all ec shards among volume servers
 
-	ec.balance [-c ALL|EACH_COLLECTION|<collection_name>] [-f]
+	ec.balance [-c EACH_COLLECTION|<collection_name>] [-f] [-dataCenter <data_center>]
 
 	Algorithm:
 
@@ -56,9 +56,9 @@ func (c *commandEcBalance) Help() string {
 func (c *commandEcBalance) Do(args []string, commandEnv *commandEnv, writer io.Writer) (err error) {
 
 	balanceCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
-	collection := balanceCommand.String("c", "EACH_COLLECTION", "collection name, or use \"ALL_COLLECTIONS\" across collections, \"EACH_COLLECTION\" for each collection")
+	collection := balanceCommand.String("c", "EACH_COLLECTION", "collection name, or use \"EACH_COLLECTION\" for each collection")
 	dc := balanceCommand.String("dataCenter", "", "only apply the balancing for this dataCenter")
-	applyBalancing := balanceCommand.Bool("f", false, "apply the balancing plan.")
+	applyBalancing := balanceCommand.Bool("f", false, "apply the balancing plan")
 	if err = balanceCommand.Parse(args); err != nil {
 		return nil
 	}
@@ -94,10 +94,6 @@ func (c *commandEcBalance) Do(args []string, commandEnv *commandEnv, writer io.W
 					return err
 				}
 			}
-		} else if *collection == "ALL" {
-			if err = balanceEcVolumes(commandEnv, "ALL", *applyBalancing); err != nil {
-				return err
-			}
 		} else {
 			if err = balanceEcVolumes(commandEnv, *collection, *applyBalancing); err != nil {
 				return err