sqooq同步mysql tinyint类型到hive的一个诡异问题

sqoop job运行完成之后，发现为tinyint类型的一类始终没有值，经检查发现上游mysql有值，再查看hdfs文件，发现这列被抓换为了boolean类型

搜索一下发现有人碰到过了，以下原文来自https://blog.csdn.net/Fenggms/article/details/84527824

首先，来一段官网原文：

27.2.5. MySQL: Import of TINYINT(1) from MySQL behaves strangely
Problem: Sqoop is treating TINYINT(1) columns as booleans, which is for example causing issues with HIVE import. This is because by default the MySQL JDBC connector maps the TINYINT(1) to java.sql.Types.BIT, which Sqoop by default maps to Boolean.

Solution: A more clean solution is to force MySQL JDBC Connector to stop converting TINYINT(1) to java.sql.Types.BIT by adding tinyInt1isBit=false into your JDBC path (to create something like jdbc:mysql://localhost/test?tinyInt1isBit=false). Another solution would be to explicitly override the column mapping for the datatype TINYINT(1) column. For example, if the column name is foo, then pass the following option to Sqoop during import: --map-column-hive foo=tinyint. In the case of non-Hive imports to HDFS, use --map-column-java foo=integer.

附官网链接：
https://sqoop.apache.org/docs/1.4.6/SqoopUserGuide.html
解释：
问题：
Mysql中存在tinyint(1)时，在数据导入到HDFS时，该字段默认会被转化为boolean数据类型。导致数据内容丢失。
解决方案：
1 在jdbc的连接后面加上：tinyInt1isBit=false
–connect jdbc:mysql://192.168.9.80:3306/kgc_behivour_log?tinyInt1isBit=false

2 另外，还有一种解决方案是显式覆盖数据类型TINYINT（1）列的列映射。例如，如果列名为foo，则在导入期间将以下选项传递给Sqoop： – map-column-hive foo = tinyint。
在非Hive导入HDFS的情况下，使用–map-column-java foo = integer