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https://issues.apache.org/jira/browse/HIVE-18829?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Naveen Gangam reassigned HIVE-18829:
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> Inputs/Outputs are not propagated to SA hooks for explain commands.
> --------------------------------------------------------------------
>
> Key: HIVE-18829
> URL: https://issues.apache.org/jira/browse/HIVE-18829
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2
> Affects Versions: 2.1.1
> Reporter: Naveen Gangam
> Assignee: Naveen Gangam
> Priority: Major
>
> With Sentry enabled, commands like {{explain drop table foo}} fail with
> {code:java}
> explain drop table foo;
> Error: Error while compiling statement: FAILED: SemanticException No valid
> privileges
> Required privilege( Table) not available in input privileges
> The required privileges: (state=42000,code=40000)
> {code}
> Sentry fails to authorize because the ExplainSemanticAnalyzer uses an
> instance of DDLSemanticAnalyzer to analyze the explain query.
> {code}
> BaseSemanticAnalyzer sem = SemanticAnalyzerFactory.get(conf, input);
> sem.analyze(input, ctx);
> sem.validate()
> {code}
> The inputs/outputs entities for this query are set in the above code.
> However, these are never set on the instance of ExplainSemanticAnalyzer
> itself and thus is not propagated into the HookContext in the calling Driver
> code.
> {code}
> sem.analyze(tree, ctx); --> this results in calling the above code that uses
> DDLSA
> hookCtx.update(sem); --> sem is an instance of ExplainSemanticAnalyzer, this
> code attempts to update the HookContext with the input/output info from ESA
> which is never set.
> {code}
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