[jira] [Updated] (SOLR-5656) Add SharedFS Failover option that allows surviving Solr instances to take over serving data for victim Solr instances.

["Mark Miller (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-5656?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mark Miller updated SOLR-5656:
------------------------------

    Attachment: SOLR-5656.patch

Sorry, took me a while to get this patch up.

Here is a first patch for feed back. It's a git patch against trunk from a couple days ago.

I'll add a new patch that's converted to svn trunk shortly.

I'll also comment shortly with more details on the patch.

> Add SharedFS Failover option that allows surviving Solr instances to take over serving data for victim Solr instances.
> ----------------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-5656
>                 URL: https://issues.apache.org/jira/browse/SOLR-5656
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Mark Miller
>            Assignee: Mark Miller
>         Attachments: SOLR-5656.patch
>
>
> When using HDFS, the Overseer should have the ability to reassign the cores from failed nodes to running nodes.
> Given that the index and transaction logs are in hdfs, it's simple for surviving hardware to take over serving cores for failed hardware.
> There are some tricky issues around having the Overseer handle this for you, but seems a simple first pass is not too difficult.
> This will add another alternative to replicating both with hdfs and solr.
> It shouldn't be specific to hdfs, and would be an option for any shared file system Solr supports.



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