发现 otter 不支持 gt-osc 工具执行的 ddl 操作

Log report: 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