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https://issues.apache.org/jira/browse/SENTRY-872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15309300#comment-15309300
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Dapeng Sun commented on SENTRY-872:
-----------------------------------

Thank [~cmccabe] for the design.
Here are my comments:
In Hive side, to avoiding Hive MetaStore send many duplicate information to 
Sentry Server, if Hive side can provide the Hive replication support, it would 
be good. I think another solution would be selecting a leader from 
HiveMetaListeners when Hive Metastores starting, in sync mode, other listeners 
must wait the leader finish sync the metadata to Sentry. After the leader 
Metastore started, other Metastore could be back to work.
About Sentry HA, currently sentry server service is stateless, it's better to 
keep it stateless and not cover it to active/passive mode, since we have plan 
to persist {{Sentry Update Log}} to database. I think sentry servers could 
share states by Zookeeper and database.



> Uber jira for HMS HA + Sentry HA with HDFS plugin improvements
> --------------------------------------------------------------
>
>                 Key: SENTRY-872
>                 URL: https://issues.apache.org/jira/browse/SENTRY-872
>             Project: Sentry
>          Issue Type: Improvement
>          Components: Hdfs Plugin
>    Affects Versions: 1.5.0
>            Reporter: Sravya Tirukkovalur
>            Assignee: Sravya Tirukkovalur
>             Fix For: 1.8.0
>
>         Attachments: SENTRY-872.0.patch, SENTRY-872.pdf, SENTRY-872_design.pdf
>
>




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