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https://issues.apache.org/jira/browse/HIVE-13099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15155194#comment-15155194
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Mohit Sabharwal commented on HIVE-13099:
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Thanks [~sinchii], didn't see you had already reported the issue.
> Non-SQLOperations lead to Web UI NPE
> ------------------------------------
>
> Key: HIVE-13099
> URL: https://issues.apache.org/jira/browse/HIVE-13099
> Project: Hive
> Issue Type: Bug
> Reporter: Mohit Sabharwal
> Assignee: Mohit Sabharwal
> Attachments: HIVE-13099.patch
>
>
> To support display of live operations in the WebUI, we record SQLOperations
> (in {{liveSqlOperations}}).
> However, to support historic operations, we save all operations in
> {{historicSqlOperations}}, including non-SQLOperations which do not have
> display entries in liveSqlOperations.
> This leads to a race condition depending on whether sessions use non-sql
> operations. Reproduce-able by issuing a 'set' operation.
> {code}
> java.lang.NullPointerException
> at
> org.apache.hive.generated.hiveserver2.hiveserver2_jsp._jspService(hiveserver2_jsp.java:131)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
> {code}
> We should save only SQLOperations in historicSqlOperations.
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