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https://issues.apache.org/jira/browse/HIVE-18238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16307857#comment-16307857
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Zoltan Haindrich commented on HIVE-18238:
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[~stakiar], [~janulatha]: HIVE-18166 added a test which clearly checks that a
"sideffect" is being exposed...this ticket is currently breaking that case
because that change is under the isolation level...so I would be intrested in
that there users expecting to have {{hive.query.string}} set to the last
executed query - or adding the that test case was just the easiest to check
that {{hive.query.string}} is not encoded
> Driver execution may not have configuration changing sideeffects
> -----------------------------------------------------------------
>
> Key: HIVE-18238
> URL: https://issues.apache.org/jira/browse/HIVE-18238
> Project: Hive
> Issue Type: Sub-task
> Components: Logical Optimizer
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Attachments: HIVE-18238.01wip01.patch
>
>
> {{Driver}} executes sql statements which use "hiveconf" settings;
> but the {{Driver}} itself may *not* change the configuration...
> I've found an example; which shows how hazardous this is...
> {code}
> set hive.mapred.mode=strict;
> select "${hiveconf:hive.mapred.mode}";
> create table t (a int);
> analyze table t compute statistics;
> select "${hiveconf:hive.mapred.mode}";
> {code}
> currently; the last select returns {{nonstrict}} because of
> [this|https://github.com/apache/hive/blob/7ddd915bf82a68c8ab73b0c4ca409f1a6d43d227/ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java#L1696]
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