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https://issues.apache.org/jira/browse/HIVE-335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13647542#comment-13647542
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Michael Koehnlein commented on HIVE-335:
This would be useful for me, too. We have data on HDFS that belongs to a system
user account, and our normal users should be able analyze it as an external
table. As it is now, the users would need HDFS write permissions on the data
directory if they want to create an external table for that directory
themselves, although they really only need read permissions. Of course that's
not a big obstacle, since we can just let the system user create the external
table. It certainly would be nice to get pure read access via external tables,
though.
External Tables should have the option to be marked Read Only
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Key: HIVE-335
URL: https://issues.apache.org/jira/browse/HIVE-335
Project: Hive
Issue Type: Improvement
Components: Metastore, Query Processor
Reporter: Richard Lee
When creating an External Table, it'd be awesome to have the option of NOT
allowing writes to it (disallow any INSERTs or if hive ever allows UPDATEs).
Adding and Dropping Partitions should still be allowed.
This will enable hive to play well with external data stores other than
hdfs where data should be non-maleable.
I'd recomend the following syntax, which applies ONLY to external tables:
CREATE EXTERNAL [READONLY] TABLE ...
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