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From "Todd Lipcon (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-8246) Auto-HA: automatically scope znode by nameservice ID
Date Sat, 07 Apr 2012 22:50:16 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-8246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Todd Lipcon updated HADOOP-8246:

    Attachment: hadoop-8246.txt

Attached patch scopes the znodes by the configured nameservice ID. So, if the configured parent
znode is /hadoop-ha, then it will work inside /hadoop-ha/<nameservice>/ without having
to manually configure the parent znode per-quorum.
> Auto-HA: automatically scope znode by nameservice ID
> ----------------------------------------------------
>                 Key: HADOOP-8246
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8246
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: auto-failover, ha
>    Affects Versions: Auto Failover (HDFS-3042)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hadoop-8246.txt
> Talking to some folks who work on operations/deployment, they pointed out that it would
make sense to automatically include the nameservice ID in the base znode used for automatic
failover. For example, even though the "root znode" is "/hadoop-ha", we should put the znodes
for a nameservice "my-ha-cluster" within "/hadoop-ha/my-ha-cluster". This allows federated
setups to work with no additional configuration.

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