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Posted to dev@lucene.apache.org by "Mark Miller (JIRA)" <ji...@apache.org> on 2015/05/01 13:13:06 UTC
[jira] [Commented] (SOLR-7121) Solr nodes should go down based on
configurable thresholds and not rely on resource exhaustion
[ https://issues.apache.org/jira/browse/SOLR-7121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14523055#comment-14523055 ]
Mark Miller commented on SOLR-7121:
-----------------------------------
I think we want to look at making these new tests much faster. The test suite with this patch doesn't yet fully pass for me either.
What is the motivation behind the core regex matching and multiple config entries? Do you really need to configure different healthcheck thresholds per core in a collection?
> Solr nodes should go down based on configurable thresholds and not rely on resource exhaustion
> ----------------------------------------------------------------------------------------------
>
> Key: SOLR-7121
> URL: https://issues.apache.org/jira/browse/SOLR-7121
> Project: Solr
> Issue Type: New Feature
> Reporter: Sachin Goyal
> Attachments: SOLR-7121.patch, SOLR-7121.patch, SOLR-7121.patch, SOLR-7121.patch, SOLR-7121.patch, SOLR-7121.patch
>
>
> Currently, there is no way to control when a Solr node goes down.
> If the server is having high GC pauses or too many threads or is just getting too many queries due to some bad load-balancer, the cores in the machine keep on serving unless they exhaust the machine's resources and everything comes to a stall.
> Such a slow-dying core can affect other cores as well by taking huge time to serve their distributed queries.
> There should be a way to specify some threshold values beyond which the targeted core can its ill-health and proactively go down to recover.
> When the load improves, the core should come up automatically.
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