diff --git a/mycat2/src/main/java/io/mycat/monitor/MycatSQLLogMonitorImpl.java b/mycat2/src/main/java/io/mycat/monitor/MycatSQLLogMonitorImpl.java
index 56b7850b5..994cd753a 100644
--- a/mycat2/src/main/java/io/mycat/monitor/MycatSQLLogMonitorImpl.java
+++ b/mycat2/src/main/java/io/mycat/monitor/MycatSQLLogMonitorImpl.java
@@ -1,9 +1,12 @@
 package io.mycat.monitor;
 
+import io.mycat.IOExecutor;
+import io.mycat.MetaClusterCurrent;
 import io.mycat.config.MonitorConfig;
 import io.mycat.config.SqlLogConfig;
 import io.mycat.config.TimerConfig;
 import io.vertx.core.Handler;
+import io.vertx.core.Promise;
 import io.vertx.core.Vertx;
 import io.vertx.core.http.HttpServer;
 import io.vertx.core.http.HttpServerRequest;
@@ -24,6 +27,7 @@ public class MycatSQLLogMonitorImpl extends MycatSQLLogMonitor {
     public static final String SHOW_DB_MONITOR_URL = "/ShowDbMonitor";
     public static final String SHOW_RW_MONITOR_URL = "/ShowRwMonitor";
     public static final String QUERY_SQL_LOG = "/QuerySqlLog";
+
     @SneakyThrows
     public MycatSQLLogMonitorImpl(long workerId, MonitorConfig monitorConfig, Vertx vertx) {
         super(workerId);
@@ -71,8 +75,15 @@ private void initBaseMonitor(Vertx vertx) {
             TimeUnit timeUnit = TimeUnit.valueOf(instanceMonitorConfig.getTimeUnit());
 
             vertx.setTimer(timeUnit.toMillis(instanceMonitorConfig.getInitialDelay()), event -> vertx.setPeriodic(timeUnit.toMillis(instanceMonitorConfig.getPeriod()), event1 -> {
-                instanceSnapshot = InstanceEntry.snapshot();
-                InstanceEntry.reset();
+                IOExecutor ioExecutor = MetaClusterCurrent.wrapper(IOExecutor.class);
+                ioExecutor.executeBlocking((Handler<Promise<Void>>) promise -> {
+                    try {
+                        instanceSnapshot = InstanceEntry.snapshot();
+                        InstanceEntry.reset();
+                    }finally {
+                        promise.tryComplete();
+                    }
+                });
             }));
         }
 
@@ -83,8 +94,15 @@ private void initBaseMonitor(Vertx vertx) {
             long readWriteRatioMillis = timeUnit.toMillis(clusterConfig.getPeriod());
 
             vertx.setTimer(timeUnit.toMillis(clusterConfig.getInitialDelay()), event -> vertx.setPeriodic(readWriteRatioMillis, event12 -> {
-                rwEntryMapSnapshot = RWEntry.snapshot();
-                RWEntry.reset();
+                IOExecutor ioExecutor = MetaClusterCurrent.wrapper(IOExecutor.class);
+                ioExecutor.executeBlocking((Handler<Promise<Void>>) promise -> {
+                    try {
+                        rwEntryMapSnapshot = RWEntry.snapshot();
+                        RWEntry.reset();
+                    }finally {
+                        promise.tryComplete();
+                    }
+                });
             }));
         }
         ////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -93,8 +111,15 @@ private void initBaseMonitor(Vertx vertx) {
             TimeUnit timeUnit = TimeUnit.valueOf(databaseInstanceMonitor.getTimeUnit());
             long databaseInstanceMonitorMillis = timeUnit.toMillis(databaseInstanceMonitor.getPeriod());
             vertx.setTimer(timeUnit.toMillis(databaseInstanceMonitor.getInitialDelay()), event -> vertx.setPeriodic(databaseInstanceMonitorMillis, event12 -> {
-                databaseInstanceMapSnapshot = DatabaseInstanceEntry.snapshot();
-                DatabaseInstanceEntry.reset();
+                IOExecutor ioExecutor = MetaClusterCurrent.wrapper(IOExecutor.class);
+                ioExecutor.executeBlocking((Handler<Promise<Void>>) promise -> {
+                    try {
+                        databaseInstanceMapSnapshot = DatabaseInstanceEntry.snapshot();
+                        DatabaseInstanceEntry.reset();
+                    }finally {
+                        promise.tryComplete();
+                    }
+                });
             }));
         }
     }
diff --git a/mycat2/src/main/java/io/mycat/vertx/VertxMycatServer.java b/mycat2/src/main/java/io/mycat/vertx/VertxMycatServer.java
index a3ec8bb4f..d19dbd2e6 100644
--- a/mycat2/src/main/java/io/mycat/vertx/VertxMycatServer.java
+++ b/mycat2/src/main/java/io/mycat/vertx/VertxMycatServer.java
@@ -134,6 +134,7 @@ public void addSession(VertxSession vertxSession) {
             socket.closeHandler(event -> {
                 String message = "session:{} is closing:{}";
                 LOGGER.info(message, vertxSession);
+                sessions.remove(vertxSession);
             });
             sessions.add(vertxSession);
         }