我想从导入数据 Mysql 至 HDFS 与 Sqoop2 我的table看起来像

CREATE TABLE `campaign` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `name` varchar(128) NOT NULL,
   PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

我已经创建了2个链接

sqoop:000> show link
+----+-------+--------------+------------------------+---------+
| Id | Name  | Connector Id |     Connector Name     | Enabled |
+----+-------+--------------+------------------------+---------+
| 2  | hdfs  | 3            | hdfs-connector         | true    |
| 7  | mysql | 1            | generic-jdbc-connector | true    |
+----+-------+--------------+------------------------+---------+

我创造了一份工作

Table SQL statement: SELECT id, name FROM campaign WHERE ${CONDITIONS}

我也试过这个sql语句-它也不起作用

Table SQL statement: SELECT cast(id as UNSIGNED INTEGER) id, name FROM campaign WHERE ${CONDITIONS}

我的工作看起来像：

sqoop:000> show job
+----+-----------------+----------------+--------------+---------+
| Id |      Name       | From Connector | To Connector | Enabled |
+----+-----------------+----------------+--------------+---------+
| 4  | campaign_import | 1              | 3            | true    |
+----+-----------------+----------------+--------------+---------+

我已成功运行此作业

sqoop:000> start job -j 4

然后我在Map上发现了错误
原因：java.lang.classcastexception:java.math.biginteger无法转换为java.lang.long at
错误的全文看起来像

Error: org.apache.sqoop.common.SqoopException: MAPRED_EXEC_0017:Error occurs during extractor run at org.apache.sqoop.job.mr.SqoopMapper.run(SqoopMapper.java:99) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:793) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1917) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158) Caused by: java.lang.ClassCastException: java.math.BigInteger cannot be cast to java.lang.Long at org.apache.sqoop.connector.common.SqoopIDFUtils.toCSVFixedPoint(SqoopIDFUtils.java:133) at org.apache.sqoop.connector.common.SqoopIDFUtils.toCSV(SqoopIDFUtils.java:588) at org.apache.sqoop.connector.idf.CSVIntermediateDataFormat.toCSV(CSVIntermediateDataFormat.java:116) at org.apache.sqoop.connector.idf.CSVIntermediateDataFormat.setObjectData(CSVIntermediateDataFormat.java:87) at org.apache.sqoop.job.mr.SqoopMapper$SqoopMapDataWriter.writeArrayRecord(SqoopMapper.java:125) at org.apache.sqoop.connector.jdbc.GenericJdbcExtractor.extract(GenericJdbcExtractor.java:96) at org.apache.sqoop.connector.jdbc.GenericJdbcExtractor.extract(GenericJdbcExtractor.java:38) at org.apache.sqoop.job.mr.SqoopMapper.run(SqoopMapper.java:95) ... 7 more

这看起来像是 id 将（bigint）键入 campaign 表，但我不知道如何在不更改此字段类型的情况下修复它：）
也许有人知道？