atk-1275 (#2050)

Author: yanhuqing666

src/main/java/com/actiontech/dble/backend/mysql/nio/handler/MultiNodeHandler.java

@@ -143,7 +143,7 @@ protected boolean canResponse() {
         return false;
     }
 
-    protected void tryErrorFinished(boolean allEnd) {
+    void tryErrorFinished(boolean allEnd) {
         if (allEnd && !session.closed()) {
             // clear session resources,release all
             if (LOGGER.isDebugEnabled()) {

src/main/java/com/actiontech/dble/server/handler/SetInnerHandler.java

@@ -115,10 +115,10 @@ public static boolean execSetAutoCommit(String stmt, ServerConnection c, boolean
             if (!c.isAutocommit() && c.getSession2().getTargetCount() > 0) {
                 c.getSession2().implicitCommit(() -> {
                     boolean multiStatementFlag = c.getSession2().getIsMultiStatement().get();
+                    c.setAutocommit(true);
                     c.write(c.writeToBuffer(c.getSession2().getOkByteArray(), c.allocate()));
                     c.getSession2().multiStatementNextSql(multiStatementFlag);
                 });
-                c.setAutocommit(true);
                 return true;
             }
             c.setAutocommit(true);