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https://issues.apache.org/jira/browse/SOLR-7458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14526933#comment-14526933
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Mike Drob commented on SOLR-7458:
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Did some digging with HDFS folks and it looks like BlockLocation::host is
generally a hostname (and not an ip, with caveat that your cluster is
configured reasonably). The general solution to determining a hostname for a
machine is very difficult, since any given server could have multiple
interfaces with multiple names for each alias, etc. We probably just have to
rely on some well known one that we can get, and not spend too much effort
worrying about if "localhost" is good enough.
Well look at SolrXmlConfig. Will add in ConcurrentHashMap.
> Expose HDFS Block Locality Metrics
> ----------------------------------
>
> Key: SOLR-7458
> URL: https://issues.apache.org/jira/browse/SOLR-7458
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Reporter: Mike Drob
> Assignee: Mark Miller
> Labels: metrics
> Attachments: SOLR-7458.patch, SOLR-7458.patch
>
>
> We should publish block locality metrics when using HDFS.
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