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https://issues.apache.org/jira/browse/KNOX-1041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16166652#comment-16166652
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Rick Kellogg edited comment on KNOX-1041 at 9/20/17 2:35 PM:
-------------------------------------------------------------
Example configuration for SOLR:
{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.
Note: the service definition does NOT list any url elements as they are
automatically pulled from Zookeeper.
was (Author: rkellogg):
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.
Note: the service definition does NOT list any url elements as they are
automatically pulled from Zookeeper.
> High Availability Support For Apache SOLR, HBase & Kafka
> --------------------------------------------------------
>
> 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/HBase/Kafka 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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