check offline read in revert_table_scan_iter

src/storage/access/ob_table_scan_iterator.cpp

@@ -566,6 +566,20 @@ int ObTableScanIterator::get_next_rows(int64_t &count, int64_t capacity)
   return ret;
 }
 
+int ObTableScanIterator::check_ls_offline_after_read()
+{
+  int ret = OB_SUCCESS;
+
+  auto &acc_ctx = ctx_guard_.get_store_ctx().mvcc_acc_ctx_;
+
+  if (acc_ctx.tx_table_guard_.check_ls_offline()) {
+    ret = OB_NOT_MASTER;
+    STORAGE_LOG(WARN, "ls offline during the read operation", K(ret), K(acc_ctx.snapshot_));
+  }
+
+  return ret;
+}
+
 int ObTableScanIterator::check_txn_status_if_read_uncommitted_()
 {
   int ret = OB_SUCCESS;