从hive(hdfs)导入数据到另一个hive(hdfs),出现莫名其妙的错乱和字段变多。
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Description
原本的hive存储是orc格式，导入另一个hive也是orc格式，但是比较扯的是，发生错位就算了，还多了些字段，简直不知道怎么办
原始数据如图
结果切出来的数据
完全懵了，前面多出来的字段，完全不知道是怎么来的
值得注意的是的是里面有些字段是字符串类型的json数据。
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Research direction
No repository file, test, or entry point is named. Start by documenting the source and target Hive/HDFS tables, confirming both use ORC, and checking how fields containing JSON strings are transferred; compare the resulting columns with the screenshots. Done means the transfer preserves field order and does not introduce extra fields, with a reproducible test case.
Written by the indexing model from the issue text.
Assessment
- Domain
- data-engineering, databases
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100