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https://issues.apache.org/jira/browse/SOLR-11036?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrzej Bialecki reassigned SOLR-11036:
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Assignee: Andrzej Bialecki
> MetricsHandler should report disk stats for solr.data.home
> ----------------------------------------------------------
>
> Key: SOLR-11036
> URL: https://issues.apache.org/jira/browse/SOLR-11036
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: metrics, SolrCloud
> Affects Versions: 7.0
> Reporter: Shalin Shekhar Mangar
> Assignee: Andrzej Bialecki
> Labels: metrics
> Fix For: 7.0
>
>
> The totalSpace and usableSpace reported by Metrics API are still based on
> coreRootDirectory (which is used as the instance dir for individual cores).
> SOLR-6671 introduced a new solr.data.home configuration for the root
> directory of all data dirs. So we should expose data home's disk metrics as
> well.
> Since the current metric names are just totalSpace and usableSpace under the
> Container group, we need to figure out how to differentiate between them and
> the data home's metrics. A few options:
> # We can introduce new metrics such as dataHomeTotalSpace and
> dataHomeUsableSpace.
> # We use the current names for the data home's metrics and introduce new ones
> for coreRootDirectory
> I lean towards #2 because of backcompat reasons. Existing users (and
> monitoring vendors/products) would be using the existing metric names to
> track disk stats for their solr installations. If a user configures a
> solr.data.home then they shouldn't get a surprise one day if the data home
> directory runs out of space when they have monitoring already in place which
> used to work for earlier versions of Solr. The probability of surprise still
> exists because one fine day you can run out of space for the
> coreRootDirectory and solr will refuse to create any cores but that is a less
> likely scenario than running out of disk space because of increasing size of
> data directories.
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