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https://issues.apache.org/jira/browse/SOLR-12224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18018648#comment-18018648
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Christos Malliaridis commented on SOLR-12224:
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I am certainly interested in this one. I looked up how I would retrieve this
information, and had the following discoveries:
It is possible as a workaround to get the collection properties by fetching and
parsing the file collectionprops.json via zookeeper (in cloud mode). The
following URL would be used for techproducts:
http://localhost:8983/solr/admin/zookeeper?detail=true&path=%2Fcollections%2Ftechproducts%2Fcollectionprops.json&wt=json
(v1 API)
Not sure how reliable this approach is, but it is the closest I got to the
collection properties.
I would want to have a v2 endpoint like GET
/api/collections/:collectionName/properties for retrieving these data. Although
there is already [a proposal in the v2 API
spreadsheet|https://docs.google.com/spreadsheets/d/1HAoBBFPpSiT8mJmgNZKkZAPwfCfPvlc08m5jz3fQBpA/edit?gid=687305869#gid=687305869&range=D67].
> there is no API to read collection properties
> ---------------------------------------------
>
> Key: SOLR-12224
> URL: https://issues.apache.org/jira/browse/SOLR-12224
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 7.3
> Reporter: Hendrik Haddorp
> Priority: Major
>
> Solr 7.3 added the COLLECTIONPROP API call
> (https://lucene.apache.org/solr/guide/7_3/collections-api.html#collectionprop)
> that allows to set arbitrary properties on a collection. There is however no
> API call that returns the data. The only option is to manually read out the
> collectionprops.json file in ZK below the collection.
> Options could be that the COLLECTIONPROP command has an option to retrieve
> properties, have a special command to list the properties and/or to have the
> properties listed in the clusterstatus output for a collection.
> Would be great if SolrJ would also be supported.
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