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From Abhay Kulkarni <akulka...@hortonworks.com>
Subject Re: Review Request 73342: RANGER-3280: Ensure that the policy/tag versions gets correctly updated for every change to service/policy/tag
Date Wed, 12 May 2021 17:52:12 GMT

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(Updated May 12, 2021, 5:52 p.m.)

Review request for ranger, Dineshkumar Yadav, Kishor Gollapalliwar, Madhan Neethiraj, Mehul
Parikh, and Velmurugan Periasamy.


Fixed database patching script for Oracle

Bugs: RANGER-3280

Repository: ranger


Every change to service/policy/tag should be recorded by incrementing the policy-version (or
tag-version) for the service. Policy-version(or tag-version) is updated in a separate transaction
after the original change that caused the version change has been committed.  This opens up
a small window where the policy-version may be overwritten when multiple such transactions
are concurrently active, leading to some 'lost' updates.

The fix includes the database patches to build a unique index on the (service_id, policy_version)
fields for x_policy_change_log table and a unique index on (service_id, service_tags_version)
fields on x_tag_change_log table. The tasks scheduled to be executed when parent transaction
is committed are repeatedly attempted until succcessful when the parent transaction is committed

Diffs (updated)

  security-admin/db/mysql/optimized/current/ranger_core_db_mysql.sql a42c2f17c 
  security-admin/db/mysql/patches/052-add-unique-constraint-on-change-logs.sql PRE-CREATION

  security-admin/db/oracle/optimized/current/ranger_core_db_oracle.sql 149d94d60 
  security-admin/db/oracle/patches/052-add-unique-constraint-on-change-logs.sql PRE-CREATION

  security-admin/db/postgres/optimized/current/ranger_core_db_postgres.sql 867bed5b6 
  security-admin/db/postgres/patches/052-add-unique-constraint-on-change-logs.sql PRE-CREATION

  security-admin/db/sqlanywhere/optimized/current/ranger_core_db_sqlanywhere.sql fd30f9648

  security-admin/db/sqlanywhere/patches/052-add-unique-constraint-on-change-logs.sql PRE-CREATION

  security-admin/db/sqlserver/optimized/current/ranger_core_db_sqlserver.sql 276a57cc2 
  security-admin/db/sqlserver/patches/053-add-unique-constraint-on-change-logs.sql PRE-CREATION

  security-admin/src/main/java/org/apache/ranger/biz/ServiceDBStore.java e3c5b542f 

Diff: https://reviews.apache.org/r/73342/diff/2/

Changes: https://reviews.apache.org/r/73342/diff/1-2/


Passed on unit tests.
Ensured that the x_service_version_info table is correctly updated when any change to service/policy/tag
is effected. Also ensured that correct set of rows are created in x_policy_change_log and
x_tag_change_log tables.


Abhay Kulkarni

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