otter版本4.2.18
源库表确实有app_icon 字段为longblob 而且确实写入了值，同步给B库同样的表结构
怀疑canal采集longblob 字段没有采集到， longblob 存的图片。
Channel挂起，报错如下：
pid:5 nid:3 exception:setl:com.alibaba.otter.node.etl.load.exception.LoadException: java.util.concurrent.ExecutionException: com.alibaba.otter.node.etl.load.exception.LoadException: com.alibaba.otter.node.etl.load.exception.LoadException: com.alibaba.otter.node.etl.load.exception.LoadException: java.lang.ClassCastException: java.lang.String cannot be cast to [B
at com.alibaba.otter.node.etl.load.loader.db.DbLoadAction$DbLoadWorker.doPreparedStatement(DbLoadAction.java:786)
at com.alibaba.otter.node.etl.load.loader.db.DbLoadAction$DbLoadWorker.access$800(DbLoadAction.java:517)
at com.alibaba.otter.node.etl.load.loader.db.DbLoadAction$DbLoadWorker$2$1.setValues(DbLoadAction.java:628)
at org.springframework.jdbc.core.JdbcTemplate$2.doInPreparedStatement(JdbcTemplate.java:816)
at org.springframework.jdbc.core.JdbcTemplate$2.doInPreparedStatement(JdbcTemplate.java:1)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:587)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:812)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:868)
at com.alibaba.otter.node.etl.load.loader.db.DbLoadAction$DbLoadWorker$2.doInTransaction(DbLoadAction.java:625)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
at com.alibaba.otter.node.etl.load.loader.db.DbLoadAction$DbLoadWorker.doCall(DbLoadAction.java:617)
at com.alibaba.otter.node.etl.load.loader.db.DbLoadAction$DbLoadWorker.call(DbLoadAction.java:545)
at com.alibaba.otter.node.etl.load.loader.db.DbLoadAction.doTwoPhase(DbLoadAction.java:462)
at com.alibaba.otter.node.etl.load.loader.db.DbLoadAction.doLoad(DbLoadAction.java:275)
at com.alibaba.otter.node.etl.load.loader.db.DbLoadAction.load(DbLoadAction.java:161)
at com.alibaba.otter.node.etl.load.loader.db.DbLoadAction$$FastClassByCGLIB$$d932a4cb.invoke()
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)
at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:618)
at com.alibaba.otter.node.etl.load.loader.db.DbLoadAction$$EnhancerByCGLIB$$80fd23c2.load()
at com.alibaba.otter.node.etl.load.loader.db.DataBatchLoader$2.call(DataBatchLoader.java:198)
at com.alibaba.otter.node.etl.load.loader.db.DataBatchLoader$2.call(DataBatchLoader.java:189)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$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)

PairId: 88 , TableId: 156 , EventType : I , Time : 1585136799000

• Consistency : , Mode :

---Pks
EventColumn[index=0,columnType=-5,columnName=APP_ID,columnValue=200519,isNull=false,isKey=true,isUpdate=true]
---oldPks

---Columns
EventColumn[index=1,columnType=-5,columnName=RES_TYPE_ID,columnValue=11,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=2,columnType=-5,columnName=RES_MANU_ID,columnValue=10011,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=3,columnType=-5,columnName=RES_SERIES_ID,columnValue=20110,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=4,columnType=-5,columnName=RES_VERSION_ID,columnValue=20110,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=5,columnType=12,columnName=APP_NAME,columnValue=xxxxxxx,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=6,columnType=12,columnName=APP_CODE,columnValue=JTNGJTTS,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=7,columnType=12,columnName=DESCRIPTION,columnValue=,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=8,columnType=1,columnName=SYNC_STATUS,columnValue=1,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=9,columnType=12,columnName=SYNC_DESC,columnValue=success,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=10,columnType=1,columnName=LOCK_STATUS,columnValue=5,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=11,columnType=12,columnName=LOCK_DESC,columnValue=xxxxxx,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=12,columnType=-5,columnName=LOCK_MAIN_ACCT_ID,columnValue=10008812,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=13,columnType=93,columnName=LOCK_TIME,columnValue=2018-10-09 10:50:50,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=14,columnType=1,columnName=DIFF_FLAG,columnValue=1,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=15,columnType=93,columnName=CREATE_TIME,columnValue=2019-08-27 12:07:36,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=16,columnType=93,columnName=LAST_UPDATE_TIME,columnValue=2019-08-28 17:11:40,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=17,columnType=1,columnName=DIALING_TEST_STATUS,columnValue=1,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=18,columnType=1,columnName=IMPORTANT_LEVEL,columnValue=,isNull=false,isKey=false,isUpdate=true]

###EventColumn[index=19,columnType=2004,columnName=APP_ICON,columnValue=,isNull=false,isKey=false,isUpdate=true]

EventColumn[index=20,columnType=12,columnName=APP_ICON_NAME,columnValue=,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=21,columnType=4,columnName=AUTHEN_LEVEL,columnValue=,isNull=true,isKey=false,isUpdate=true]
EventColumn[index=22,columnType=1,columnName=IS_BS,columnValue=1,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=23,columnType=12,columnName=SSO_PROTOAL,columnValue=,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=24,columnType=12,columnName=LOGIN_BROWSER_TYPE,columnValue=01,isNull=false,isKey=false,isUpdate=true]
EventColumn[index=25,columnType=12,columnName=NET_WORK_AREA,columnValue=,isNull=true,isKey=false,isUpdate=true]