老是会断开，这是什么原因呢？源库已设了86400的超时时间了
“subTaskStatus”: [
{
“name”: “nadia”,
“stage”: “Paused”,
“unit”: “Dump”,
“result”: {
“isCanceled”: false,
“errors”: [
{
“ErrCode”: 32001,
“ErrClass”: “dump-unit”,
“ErrScope”: “internal”,
“ErrLevel”: “high”,
“Message”: "mydumper/dumpling runs with error, with output (may empty): ",
“RawCause”: “sql: SHOW COLUMNS FROM nadia.goods_store: driver: bad connection”,
“Workaround”: “”
}
],
“detail”: null
},
“unresolvedDDLLockID”: “”,
“dump”: {
“totalTables”: “103”,
“completedTables”: 20,
“finishedBytes”: 19923930333,
“finishedRows”: 106142560,
“estimateTotalRows”: 227656254,
“bps”: “0”,
“progress”: “”
},
“validation”: null
}