hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Thejas M Nair (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-7935) Support dynamic service discovery for HiveServer2
Date Mon, 15 Sep 2014 21:28:35 GMT

    [ https://issues.apache.org/jira/browse/HIVE-7935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14134516#comment-14134516
] 

Thejas M Nair commented on HIVE-7935:
-------------------------------------

+1 pending tests on latest patch


> Support dynamic service discovery for HiveServer2
> -------------------------------------------------
>
>                 Key: HIVE-7935
>                 URL: https://issues.apache.org/jira/browse/HIVE-7935
>             Project: Hive
>          Issue Type: New Feature
>          Components: HiveServer2, JDBC
>    Affects Versions: 0.14.0
>            Reporter: Vaibhav Gumashta
>            Assignee: Vaibhav Gumashta
>             Fix For: 0.14.0
>
>         Attachments: HIVE-7935.1.patch, HIVE-7935.2.patch, HIVE-7935.3.patch, HIVE-7935.4.patch,
HIVE-7935.5.patch, HIVE-7935.6.patch, HIVE-7935.7.patch, HIVE-7935.8.patch
>
>
> To support Rolling Upgrade / HA, we need a mechanism by which a JDBC client can dynamically
resolve an HiveServer2 to connect to.
> *High Level Design:* 
> Whether, dynamic service discovery is supported or not, can be configured by setting
HIVE_SERVER2_SUPPORT_DYNAMIC_SERVICE_DISCOVERY. ZooKeeper is used to support this.
> * When an instance of HiveServer2 comes up, it adds itself as a znode to ZooKeeper under
a configurable namespace (HIVE_SERVER2_ZOOKEEPER_NAMESPACE).
> * A JDBC/ODBC client now specifies the ZooKeeper ensemble in its connection string, instead
of pointing to a specific HiveServer2 instance. The JDBC driver, uses the ZooKeeper ensemble
to pick an instance of HiveServer2 to connect for the entire session.
> * When an instance is removed from ZooKeeper, the existing client sessions continue till
completion. When the last client session completes, the instance shuts down.
> * All new client connection pick one of the available HiveServer2 uris from ZooKeeper.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message