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https://issues.apache.org/jira/browse/IMPALA-13946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18092598#comment-18092598
 ] 

ASF subversion and git services commented on IMPALA-13946:
----------------------------------------------------------

Commit a659afeabbdd48ddda365ba918798f9e47676df2 in impala's branch 
refs/heads/master from stiga-huang
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=a659afeab ]

IMPALA-13946: Turn on allow_catalog_cache_op_from_masked_users by default

Most of the users turn this on to resolve the performance regression on
INVALIDATE and REFRESH commands. The regression is due to additional
metadata loading if the table is unloaded in catalogd. Though this is
resolved by IMPALA-14703, i.e. don't need metadata loading anymore,
checking table masking policies is still an additional work. Setting
allow_catalog_cache_op_from_masked_users to true skips this check.

Test Changes:
 - Moved the negative test (test_block_metadata_update) to
   TestRangerIndependent since it now requires restarting the cluster
   with the flag off. Also mirrored it to test on both catalog modes.
 - For FE tests that depend on this flag to be false, explicitly set it
   before the tests.

Tests
 - Ran CORE tests

Change-Id: I2d3be4467c6dddf5d9cbe1f68e1a19555b3f9359
Reviewed-on: http://gerrit.cloudera.org:8080/24510
Reviewed-by: Zoltan Borok-Nagy <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>


> Turn on allow_catalog_cache_op_from_masked_users by default
> -----------------------------------------------------------
>
>                 Key: IMPALA-13946
>                 URL: https://issues.apache.org/jira/browse/IMPALA-13946
>             Project: IMPALA
>          Issue Type: Task
>            Reporter: Quanlong Huang
>            Assignee: Quanlong Huang
>            Priority: Blocker
>
> This aims to turn on allow_catalog_cache_op_from_masked_users by default. So 
> users that have Ranger masking policies can still run INVALIDATE/REFRESH on 
> the table. This flag is added in IMPALA-11501 as false by default.
> Thank [~MikaelSmith] for pointing out this!



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