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https://issues.apache.org/jira/browse/SOLR-7458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14514236#comment-14514236
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Mike Drob commented on SOLR-7458:
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bq. Looks like directories is never set to non null.
Oops, thanks. I had to redo this file when splitting the patch from other work
and looks like I missed this. Will fix in the next version of the patch.
bq. That makes me think this impl will have the same type of problems. We may
have to look into doing cached responses or something.
I know that HBase has done something similar, I'll check with some folks over
there to see if they have battle tested experience.
> 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
>
>
> We should publish block locality metrics when using HDFS.
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