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From "Mike Drob (JIRA)" <>
Subject [jira] [Commented] (SOLR-7458) Expose HDFS Block Locality Metrics
Date Mon, 15 Jun 2015 15:16:00 GMT


Mike Drob commented on SOLR-7458:

Strange. I tried running the suggested ant command and was unable to reproduce locally. The
command output on Jenkins isn't terribly useful either. I can submit a patch to add error
messages to the asserts if we think that will help long term maintainability.

The failure looks like the test runner on Jenkins is able to count the written blocks as local
despite no hostname having been set. Maybe something in the environment affects how MiniDfsCluster
operates. We could set an explicit bogus hostname to ensure that the data is "not local."
I'm not sure how the test will interact with (the next assert) on Jenkins though.

> Expose HDFS Block Locality Metrics
> ----------------------------------
>                 Key: SOLR-7458
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>          Components: SolrCloud
>            Reporter: Mike Drob
>            Assignee: Mark Miller
>              Labels: metrics
>             Fix For: 5.3, Trunk
>         Attachments: Data Locality.png, SOLR-7458.patch, SOLR-7458.patch, SOLR-7458.patch,
SOLR-7458.patch, SOLR-7458.patch
> We should publish block locality metrics when using HDFS.

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