Thank you!
On Fri, Apr 6, 2018 at 10:34 PM, Chris Hostetter <hossman_luc...@fucit.org>
wrote:
>
> : In my Solr 6.6 based code, I have the following line that get the total
> : number of documents in a collection:
> :
> : totalDocs=indexSearcher.getStatistics().get("numDocs"))
> ...
> : With Solr 7.2.1, 'getStatistics' is no longer available, and it seems
> that
> : it is replaced by 'collectionStatistics' or 'termStatistics':
> ...
> : So my questions is what is the equivalent statement in solr 7.2.1? Is it:
> :
> : solrIndexSearcher.collectionStatistics("numDocs").maxDoc();
>
> Uh... no. that's not quite true.
>
> In the 6.x code line, getStatistics() was part of the SolrInfoMBean API
> that SolrIndexSearcher and many other Solr objects implemented...
>
> http://lucene.apache.org/solr/6_6_0/solr-core/org/apache/
> solr/search/SolrIndexSearcher.html#getStatistics--
>
> In 7.0, SolrInfoMBean was replaced with SolrInfoBean as part ofthe switch
> over to the new more robust the Metrics API...
>
> https://lucene.apache.org/solr/guide/7_0/major-changes-
> in-solr-7.html#jmx-support-and-mbeans
> https://lucene.apache.org/solr/guide/7_0/metrics-reporting.html
> http://lucene.apache.org/solr/7_0_0/solr-core/org/apache/
> solr/core/SolrInfoBean.html
>
> (The collectionStatistics() and termStatistics() methods are lower level
> Lucene concepts)
>
> IIRC The closest 7.x equivilent to "indexSearcher.getStatistics()" is
> "indexSearcher.getMetricsSnapshot()" ... but the keys in that map will
> have slightly diff/longer names then they did before, you can use
> "indexSearcher.getMetricNames()" so see the full list.
>
> ...but frankly that's all a very comlicated way to get "numDocs"
> if you're writting a solr plugin that has direct access to a
> SolrIndexSearcher instance ... you can just call
> "solrIndexSearcher.numDocs()" method and make your life a lot simpler.
>
>
>
> -Hoss
> http://www.lucidworks.com/
>
