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https://issues.apache.org/jira/browse/HIVE-12758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15102684#comment-15102684
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Gopal V commented on HIVE-12758:
--------------------------------
LGTM - +1.
The patch seems to have also fixed stats issues in {{subquery_multiinsert.q}}
> Parallel compilation: Operator::resetId() is not thread-safe
> ------------------------------------------------------------
>
> Key: HIVE-12758
> URL: https://issues.apache.org/jira/browse/HIVE-12758
> Project: Hive
> Issue Type: Bug
> Components: Physical Optimizer
> Affects Versions: 2.0.0, 2.1.0
> Reporter: Gopal V
> Assignee: Sergey Shelukhin
> Attachments: HIVE-12758.01.patch, HIVE-12758.02.patch,
> HIVE-12758.03.patch, HIVE-12758.03.patch, HIVE-12758.patch
>
>
> {code}
> private static AtomicInteger seqId;
> ...
> public Operator() {
> this(String.valueOf(seqId.getAndIncrement()));
> }
> public static void resetId() {
> seqId.set(0);
> }
> {code}
> Potential race-condition.
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