otter支持使用pt-online-schema-change工具改表同步吗

我在测试过程中，用pt-online-schema-change改表之后，同步就断了，报下面的错误：

pid:1 nid:2 exception:setl:com.alibaba.otter.node.etl.select.exceptions.SelectException: java.lang.NullPointerException at com.alibaba.otter.node.etl.select.selector.MessageParser.parse(MessageParser.java:209) at com.alibaba.otter.node.etl.select.selector.canal.CanalEmbedSelector.selector(CanalEmbedSelector.java:264) at com.alibaba.otter.node.etl.select.SelectTask.processSelect(SelectTask.java:236) at com.alibaba.otter.node.etl.select.SelectTask.access$300(SelectTask.java:94) at com.alibaba.otter.node.etl.select.SelectTask$1.run(SelectTask.java:208) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) Caused by: java.lang.NullPointerException at com.alibaba.otter.node.etl.select.selector.MessageParser.internParse(MessageParser.java:378) at com.alibaba.otter.node.etl.select.selector.MessageParser.parse(MessageParser.java:181) ... 9 more