增加Doris表副本，Routine load任务导入报错，应如何解决？

当前动态分区表为一副本，使用以下命令变更表副本后，Routine load任务报错，应该如何处理？
ALTER TABLE ad_link.huan_ad_link_direct_log modify partition(*) set ("replication_num" = "2");
ALTER TABLE ad_link.huan_ad_link_direct_log SET ("default.replication_num" = "2");

报错信息如下：
ErrorReason{code=errCode = 3, msg='failed to create task: errCode = 3, detailMessage = tablet 1010448 alive replica num 1 < load required replica num 2, alive backends: [10113]'}