ERROR c.a.o.canal.client.adapter.es.core.service.ESSyncService - sync error, es index: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
2021-03-16 09:36:21.249 [pool-2-thread-1] ERROR c.a.otter.canal.adapter.launcher.loader.AdapterProcessor - java.util.NoSuchElementException
java.lang.RuntimeException: java.util.NoSuchElementException
	at com.alibaba.otter.canal.client.adapter.es.core.service.ESSyncService.sync(ESSyncService.java:116) ~[na:na]
	at com.alibaba.otter.canal.client.adapter.es.core.service.ESSyncService.sync(ESSyncService.java:64) ~[na:na]
	at com.alibaba.otter.canal.client.adapter.es.core.ESAdapter.sync(ESAdapter.java:115) ~[na:na]
	at com.alibaba.otter.canal.client.adapter.es.core.ESAdapter.sync(ESAdapter.java:94) ~[na:na]
	at com.alibaba.otter.canal.adapter.launcher.loader.AdapterProcessor.batchSync(AdapterProcessor.java:139) ~[client-adapter.launcher-1.1.5-SNAPSHOT.jar:na]
	at com.alibaba.otter.canal.adapter.launcher.loader.AdapterProcessor.lambda$null$1(AdapterProcessor.java:97) ~[client-adapter.launcher-1.1.5-SNAPSHOT.jar:na]
	at java.util.concurrent.CopyOnWriteArrayList.forEach(CopyOnWriteArrayList.java:895) ~[na:1.8.0_275]
	at com.alibaba.otter.canal.adapter.launcher.loader.AdapterProcessor.lambda$null$2(AdapterProcessor.java:94) ~[client-adapter.launcher-1.1.5-SNAPSHOT.jar:na]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_275]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_275]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_275]
	at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_275]
Caused by: java.util.NoSuchElementException: null
	at java.util.ArrayList$Itr.next(ArrayList.java:864) ~[na:1.8.0_275]
	at com.alibaba.otter.canal.client.adapter.es7x.support.ES7xTemplate.getESDataFromDmlData(ES7xTemplate.java:321) ~[na:na]
	at com.alibaba.otter.canal.client.adapter.es.core.service.ESSyncService.singleTableSimpleFiledUpdate(ESSyncService.java:818) ~[na:na]
	at com.alibaba.otter.canal.client.adapter.es.core.service.ESSyncService.update(ESSyncService.java:266) ~[na:na]
	at com.alibaba.otter.canal.client.adapter.es.core.service.ESSyncService.sync(ESSyncService.java:101) ~[na:na]
	... 11 common frames omitted
2021-03-16 09:36:21.250 [Thread-4] ERROR c.a.otter.canal.adapter.launcher.loader.AdapterProcessor - Outer adapter sync failed!  Error sync but ACK!

先参考这位仁兄的: https://blog.csdn.net/weixin_45528987/article/details/105728768

如果不行 再参考我的:
你看你数据库字段是不是大写了,而ES上是小写的 ,
没错, canal区分大小写/(ㄒoㄒ)/~~