hive 修改分区备注,如何修改Hive分区列名

最新推荐文章于 2024-12-27 19:53:13 发布

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最新推荐文章于 2024-12-27 19:53:13 发布

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文章标签： hive 修改分区备注

本文探讨了在Hive中更改分区列名称的方法。作者在查找了许多资料后发现，直接更改列名似乎只能通过删除并重新创建表的方式实现。此外，由于Hive分区是以目录形式存在，还需要使用hadoop fs命令来更改HDFS上的目录名称。

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I have to change the partition column name (not partition spec), I looked for the commands in hive wiki and some google pages. I can find the options for altering the partition spec,

i.e. For example

In /table/country='US' I can change US to USA, but I want to change country to continent.

I feel like the only option available for changing partition column name is dropping and re-creating the table. Is there is any other option available please help me.

Thanks in advance.

解决方案

But as the document says, it only changes the metadata. Hive partitions are implemented as directories with the naming pattern columnName=spec. So you also need to change the names of those directories on HDFS by using "hadoop fs" command.