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https://issues.apache.org/jira/browse/RANGER-2236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16649841#comment-16649841
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xiaoli commented on RANGER-2236:
--------------------------------
link to https://issues.apache.org/jira/browse/RANGER-2158
> updatePolicy performance problem
> --------------------------------
>
> Key: RANGER-2236
> URL: https://issues.apache.org/jira/browse/RANGER-2236
> Project: Ranger
> Issue Type: Improvement
> Components: admin
> Affects Versions: 0.7.0
> Reporter: xiaoli
> Priority: Major
>
> when a hdfs policy has many users,CreateNewPolicyItemsForPolicy and
> deleteExistingPolicyItems possible performance issues
> List<XXPolicyItemUserPerm> users = userPermDao.findByPolicyItemId(polItemId);
> for(XXPolicyItemUserPerm user : users) {
> userPermDao.remove(user);
> }
> public boolean remove(T obj) {
> if (obj == null) {
> return true;
> }
> em.remove(obj);
> em.flush();
> return true;
> }
> ---------------------------
> Causes the updatePolicy method to return execution results slowly
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