add more logs for snapshot (#8298)

confignode/src/main/java/org/apache/iotdb/confignode/persistence/executor/ConfigPlanExecutor.java

@@ -405,7 +405,7 @@ public class ConfigPlanExecutor {
               try {
                 takeSnapshotResult = x.processTakeSnapshot(snapshotDir);
               } catch (TException | IOException e) {
-                LOGGER.error(e.getMessage());
+                LOGGER.error("Take snapshot error: {}", e.getMessage());
                 takeSnapshotResult = false;
               } finally {
                 // If any snapshot fails, the whole fails
@@ -415,6 +415,9 @@ public class ConfigPlanExecutor {
                 }
               }
             });
+    if (result.get()) {
+      LOGGER.info("Task snapshot success, snapshotDir: {}", snapshotDir);
+    }
     return result.get();
   }
 
@@ -426,6 +429,7 @@ public class ConfigPlanExecutor {
       return;
     }
 
+    AtomicBoolean result = new AtomicBoolean(true);
     snapshotProcessorList
         .parallelStream()
         .forEach(
@@ -433,9 +437,13 @@ public class ConfigPlanExecutor {
               try {
                 x.processLoadSnapshot(latestSnapshotRootDir);
               } catch (TException | IOException e) {
-                LOGGER.error(e.getMessage());
+                result.set(false);
+                LOGGER.error("Load snapshot error: {}", e.getMessage());
               }
             });
+    if (result.get()) {
+      LOGGER.info("Load snapshot success, latestSnapshotRootDir: {}", latestSnapshotRootDir);
+    }
   }
 
   private DataSet getSchemaNodeManagementPartition(ConfigPhysicalPlan req) {