我正在尝试将所有时间戳字段转换为具有以下格式的字符串类型 yyyy-MM-dd HH:mm:ss .
要转换多个字段，我必须分别为每个字段创建一个转换。

...
"transforms":"tsFormat1,tsFormat2,...,tsFormatN",
"transforms.tsFormat1.type": "org.apache.kafka.connect.transforms.TimestampConverter$Value",
"transforms.tsFormat1.target.type": "string",
"transforms.tsFormat1.field": "ts_col1",
"transforms.tsFormat1.format": "yyyy-MM-dd HH:mm:ss",
"transforms.tsFormat2.type": "org.apache.kafka.connect.transforms.TimestampConverter$Value",
"transforms.tsFormat2.target.type": "string",
"transforms.tsFormat2.field": "ts_col2",
"transforms.tsFormat2.format": "yyyy-MM-dd HH:mm:ss",
...
"transforms.tsFormatN.type": "org.apache.kafka.connect.transforms.TimestampConverter$Value",
"transforms.tsFormatN.target.type": "string",
"transforms.tsFormatN.field": "ts_colN",
"transforms.tsFormatN.format": "yyyy-MM-dd HH:mm:ss",
...

 
有没有办法对所有时间戳列应用单个转换？
我试过了，

...
"transforms":"tsFormat",
"transforms.tsFormat.type": "org.apache.kafka.connect.transforms.TimestampConverter$Value",
"transforms.tsFormat.target.type": "string",
"transforms.tsFormat.field": "ts_col1, ts_col2,..., ts_colN",
"transforms.tsFormat.format": "yyyy-MM-dd HH:mm:ss",
...

和

...
"transforms":"tsFormat",
"transforms.tsFormat.type": "org.apache.kafka.connect.transforms.TimestampConverter$Value",
"transforms.tsFormat.target.type": "string",
"transforms.tsFormat.field": "ts_col1",
"transforms.tsFormat.field": "ts_col2",
...
"transforms.tsFormat.field": "ts_colN",
"transforms.tsFormat.format": "yyyy-MM-dd HH:mm:ss",
...

 
更好的方法是数字类型匹配 "numeric.mapping": "best_fit" . 就像怎样 numeric.mapping 应用于所有数字字段（无需手动指定字段名）以尝试查找最佳数字类型，是否有类似的方法可以对所有时间戳字段应用转换或字符串格式？