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https://issues.apache.org/jira/browse/SOLR-7121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14361149#comment-14361149
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Sachin Goyal commented on SOLR-7121:
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[[email protected]], I have implemented the above proposition.
\\
{{solrconfig-goDownOnBadGC.xml}} has a new configuration
{{solrHealthMonitorClass}} for specifying what class to instantiate for
SolrHealtMonitor.
{{SolrHealthMonitorImplForBadGC}} is the class which is written specifically
for this test and is used in the above config.
\\
{{SolrHealthMonitorFactory}} helps to instantiate the right class based on the
above config.
Default option for 'solrHealthMonitorClass' is SolrHealthMonitorImpl
\\
I am not including 'solrHealthMonitorClass' in the sample configuration to keep
them simple.
Let me know if you think we should actually add this to sample public
configuration too.
> 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
>
>
> 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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