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From "Hardik Upadhyay (JIRA)" <>
Subject [jira] [Commented] (SOLR-4620) CloudSolrServer has single point of failure
Date Thu, 21 Mar 2013 11:45:15 GMT


Hardik Upadhyay commented on SOLR-4620:

CloudSolrServer constructor accepts only single zkHost server, which in case is dead for a
time being,CloudSolrServer will fail to perform operations,even though,enough zkHost servers
are up to serve the requet.

The request is to improve CloudSolrServer to accept list of zkHost to connect to.
And a zkStatereader should iterate through a list until it can connect to a any one zkHost
in the list,instead of just reporting an exception on very first failure.
> CloudSolrServer has single point of failure
> -------------------------------------------
>                 Key: SOLR-4620
>                 URL:
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>            Reporter: Hardik Upadhyay
>              Labels: features, patch
> CloudSolrServer (solrj) has single point of failure.If the zookeeper node specified into
cloud solr server client is down,solr client will fail.
> (Since purpose of zookeeper is to avoid such failures and to provide high availability)
This seems to be a valid bug,as it violets single point of failure.
> Rather CloudSolrServer should accept list of zkHost and should not fail until a single
zkHost is up.

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