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https://issues.apache.org/jira/browse/SOLR-6325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15877988#comment-15877988
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Andrzej Bialecki commented on SOLR-6325:
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SOLR-9858 implements a more general mechanism for reporting and aggregation of
stats between replicas, leaders and nodes. There are probably some missing
pieces there that we could take from this issue (e.g. index size reporting).
> Expose per-collection and per-shard aggregate statistics
> --------------------------------------------------------
>
> Key: SOLR-6325
> URL: https://issues.apache.org/jira/browse/SOLR-6325
> Project: Solr
> Issue Type: Sub-task
> Components: SolrCloud
> Reporter: Shalin Shekhar Mangar
> Assignee: Shalin Shekhar Mangar
> Fix For: 4.9, 6.0
>
> Attachments: SOLR-6325.patch, SOLR-6325.patch, SOLR-6325.patch,
> SOLR-6325.patch
>
>
> SolrCloud doesn't provide any aggregate stats about the cluster or a
> collection. Very common questions such as document counts per shard, index
> sizes, request rates etc cannot be answered easily without figuring out the
> cluster state, invoking multiple core admin APIs and aggregating them
> manually.
> I propose that we expose an API which returns each of the following on a
> per-collection and per-shard basis:
> # Document counts
> # Index size on disk
> # Query request rate
> # Indexing request rate
> # Real time get request rate
> I am not yet sure if this should be a distributed search component or a
> collection API.
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