日志报：
pid:7 nid:1 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:218)
at com.alibaba.otter.node.etl.select.selector.canal.CanalEmbedSelector.selector(CanalEmbedSelector.java:278)
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:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException

通过查看otter停止的binlog运行位置，然后到binlog里面把日志解析出来，猜测应该是执行rename操作时,otter报空指针了：

at 12852379

rename /* gh-ost */ table allin_followup_platform . push_detail to allin_followup_platform . _push_detail_del , allin_followup_pl atform . _push_detail_gho to allin_followup_platform . push_detail

上面push_detail表正是我要用otter同步的表，但是执行这个rename操作时，otter停止工作了，这说明，otter不支持gh-osc或者pt-osc工具的DDL操作。