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Posted to dev@knox.apache.org by "Rick Kellogg (JIRA)" <ji...@apache.org> on 2017/09/14 17:30:00 UTC
[jira] [Commented] (KNOX-1041) High Availability Support For Apache
SOLR
[ https://issues.apache.org/jira/browse/KNOX-1041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16166652#comment-16166652 ]
Rick Kellogg commented on KNOX-1041:
------------------------------------
Example configuration:
{noformat}
<provider>
<role>ha</role>
<name>HaProvider</name>
<enabled>true</enabled>
<param>
<name>SOLR</name>
<value>maxFailoverAttempts=3;failoverSleep=1000;enabled=true;zookeeperEnsemble=machine1:2181,machine2:2181,machine3:2181</value>
</param>
</provider>
{noformat}
It would be great if we could obtain the ZookeeperEnsemble information from a central location of the topology configuration.
> High Availability Support For Apache SOLR
> -----------------------------------------
>
> Key: KNOX-1041
> URL: https://issues.apache.org/jira/browse/KNOX-1041
> Project: Apache Knox
> Issue Type: New Feature
> Components: Server
> Affects Versions: 0.12.0, 0.13.0
> Reporter: Rick Kellogg
> Assignee: Rick Kellogg
> Fix For: 0.14.0
>
> Attachments: KNOX-1041.patch
>
>
> Provide high-availability/fail-over between Knox and SOLR using the existing DefaultHaDispatch mechanism and a customized URLManager implementation with knowledge of active hosts in Zookeeper.
> When SOLR Cloud is used the active hosts are stored in Zookeeper under the /live_nodes path. The attached custom URLManager implementation queries Zookeeper for the active hosts upon startup. In the event of fail-over, it updates the internal list of hosts.
> The HS2ZookeeperURLManager implementation used to provide similar functionality for Hive was used as a starting point.
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