[
https://issues.apache.org/jira/browse/HIVE-2086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13014126#comment-13014126
]
Q Long commented on HIVE-2086:
------------------------------
It seems that "create external table like" does not preserve the external
property.
Note that both the original table S and the new table T are external, and data
loss will only occur when creating T using statement
"create external table T like S location L". No data loss if T with full table
definitions (i.e, does not use like statement)
> Data loss with external table
> -----------------------------
>
> Key: HIVE-2086
> URL: https://issues.apache.org/jira/browse/HIVE-2086
> Project: Hive
> Issue Type: Bug
> Components: Metastore
> Affects Versions: 0.7.0
> Environment: Amazon elastics mapreduce cluster
> Reporter: Q Long
>
> Data loss when using "create external table like" statement.
> 1) Set up an external table S, point to location L. Populate data in S.
> 2) Create another external table T, using statement like this:
> create external table T like S location L
> Make sure table T point to the same location as the original table S.
> 3) Query table T, see the same set of data in S.
> 4) drop table T.
> 5) Query table S will return nothing, and location L is deleted.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
