1. fix initial value of physicRatio in...

1. fix initial value of physicRatio in org.apache.rocketmq.broker.processor.SendMessageProcessor#diskUtil
2. use minPhysicsUsedRatio instead of max in org.apache.rocketmq.store.DefaultMessageStore#getRuntimeInfo

broker/src/main/java/org/apache/rocketmq/broker/processor/SendMessageProcessor.java

@@ -636,7 +636,7 @@ public class SendMessageProcessor extends AbstractSendMessageProcessor implement
     }
 
     private String diskUtil() {
-        double physicRatio = -1;
+        double physicRatio = 100;
         String storePath = this.brokerController.getMessageStoreConfig().getStorePathCommitLog();
         if (storePath.contains(MessageStoreConfig.MULTI_PATH_SPLITTER)) {
             String[] paths = storePath.trim().split(MessageStoreConfig.MULTI_PATH_SPLITTER);

store/src/main/java/org/apache/rocketmq/store/DefaultMessageStore.java

@@ -785,14 +785,14 @@ public class DefaultMessageStore implements MessageStore {
 
         String commitLogStorePath = DefaultMessageStore.this.getMessageStoreConfig().getStorePathCommitLog();
         if (commitLogStorePath.contains(MessageStoreConfig.MULTI_PATH_SPLITTER)) {
-            double maxValue = Double.MIN_VALUE;
+            double minPhysicsUsedRatio = Double.MAX_VALUE;
             String[] paths = commitLogStorePath.trim().split(MessageStoreConfig.MULTI_PATH_SPLITTER);
             for (String clPath : paths) {
                 double physicRatio = UtilAll.getDiskPartitionSpaceUsedPercent(clPath);
                 result.put(RunningStats.commitLogDiskRatio.name() + "_" + clPath, String.valueOf(physicRatio));
-                maxValue = Math.max(maxValue, physicRatio);
+                minPhysicsUsedRatio = Math.min(minPhysicsUsedRatio, physicRatio);
             }
-            result.put(RunningStats.commitLogDiskRatio.name(), String.valueOf(maxValue));
+            result.put(RunningStats.commitLogDiskRatio.name(), String.valueOf(minPhysicsUsedRatio));
         } else {
             String storePathPhysic = DefaultMessageStore.this.getMessageStoreConfig().getStorePathCommitLog();
             double physicRatio = UtilAll.getDiskPartitionSpaceUsedPercent(storePathPhysic);