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https://issues.apache.org/jira/browse/HIVE-10022?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sushanth Sowmyan reassigned HIVE-10022:
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Assignee: Sushanth Sowmyan (was: Pankit Thapar)
> Authorization checks for non existent file/directory should not be recursive
> ----------------------------------------------------------------------------
>
> Key: HIVE-10022
> URL: https://issues.apache.org/jira/browse/HIVE-10022
> Project: Hive
> Issue Type: Bug
> Components: Authorization
> Affects Versions: 0.14.0
> Reporter: Pankit Thapar
> Assignee: Sushanth Sowmyan
> Attachments: HIVE-10022.2.patch, HIVE-10022.3.patch, HIVE-10022.patch
>
>
> I am testing a query like :
> set hive.test.authz.sstd.hs2.mode=true;
> set
> hive.security.authorization.manager=org.apache.hadoop.hive.ql.security.authorization.plugin.sqlstd.SQLStdHiveAuthorizerFactoryForTest;
> set
> hive.security.authenticator.manager=org.apache.hadoop.hive.ql.security.SessionStateConfigUserAuthenticator;
> set hive.security.authorization.enabled=true;
> set user.name=user1;
> create table auth_noupd(i int) clustered by (i) into 2 buckets stored as orc
> location '${OUTPUT}' TBLPROPERTIES ('transactional'='true');
> Now, in the above query, since authorization is true,
> we would end up calling doAuthorizationV2() which ultimately ends up calling
> SQLAuthorizationUtils.getPrivilegesFromFS() which calls a recursive method :
> FileUtils.isActionPermittedForFileHierarchy() with the object or the ancestor
> of the object we are trying to authorize if the object does not exist.
> The logic in FileUtils.isActionPermittedForFileHierarchy() is DFS.
> Now assume, we have a path as a/b/c/d that we are trying to authorize.
> In case, a/b/c/d does not exist, we would call
> FileUtils.isActionPermittedForFileHierarchy() with say a/b/ assuming a/b/c
> also does not exist.
> If under the subtree at a/b, we have millions of files, then
> FileUtils.isActionPermittedForFileHierarchy() is going to check file
> permission on each of those objects.
> I do not completely understand why do we have to check for file permissions
> in all the objects in branch of the tree that we are not trying to read
> from /write to.
> We could have checked file permission on the ancestor that exists and if it
> matches what we expect, the return true.
> Please confirm if this is a bug so that I can submit a patch else let me know
> what I am missing ?
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