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https://issues.apache.org/jira/browse/HIVE-2378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13094344#comment-13094344
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Hudson commented on HIVE-2378:
------------------------------
Integrated in Hive-trunk-h0.21 #925 (See
[https://builds.apache.org/job/Hive-trunk-h0.21/925/])
HIVE-2378. Warn user that precision is lost when bigint is implicitly cast
to double. (Kevin Wilfong via Siying Dong)
sdong : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1163455
Files :
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/ErrorMsg.java
*
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/plan/ExprNodeGenericFuncDesc.java
* /hive/trunk/ql/src/test/queries/clientnegative/compare_double_bigint.q
* /hive/trunk/ql/src/test/queries/clientnegative/compare_string_bigint.q
* /hive/trunk/ql/src/test/results/clientnegative/compare_double_bigint.q.out
* /hive/trunk/ql/src/test/results/clientnegative/compare_string_bigint.q.out
> Warn user that precision is lost when bigint is implicitly cast to double.
> --------------------------------------------------------------------------
>
> Key: HIVE-2378
> URL: https://issues.apache.org/jira/browse/HIVE-2378
> Project: Hive
> Issue Type: Improvement
> Reporter: Kevin Wilfong
> Assignee: Kevin Wilfong
> Attachments: HIVE-2378.1.patch.txt, HIVE-2378.2.patch.txt,
> HIVE-2378.3.patch.txt
>
>
> When a bigint is implicitly cast to a double (when a bigint is involved in an
> equality expression with a string or double) precision may be lost, resulting
> in unexpected behavior. Until we fix the underlying issue we should throw an
> error in strict mode, and a warning in nonstrict mode alerting the user about
> this.
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