Hi,
I've tried to split my collection from 1 shard to 2 shards using the
command:
http://localhost:8983/solr/admin/collections?action=SPLITSHARD&collection=collection1&shard=shard1
The shard was split successfully with all the index intact. The search and
highlight gives the same results before and after the split.
However, when I tried to query the clustering, I found that the speed to
generate the cluster label become much slower after the split (used to be
average about 2 seconds, but now it takes about 5 seconds).
Also, the clustering labels produced before and after the split are
different. What could be the reason?
Below is my clustering handler for reference. I'm using Solr 5.2.1.
<requestHandler name="/clustering"
startup="lazy"
enable="${solr.clustering.enabled:true}"
class="solr.SearchHandler">
<lst name="defaults">
<!-- Added by Edwin on 120515 -->
<str name="echoParams">explicit</str>
<!--<int name="rows">1000</int>-->
<int name="rows">200</int>
<str name="defType">edismax</str>
<str name="wt">json</str>
<str name="indent">true</str>
<str name="df">text</str>
<str name="fl">null</str>
<bool name="clustering">true</bool>
<bool name="clustering.results">true</bool>
<str name="clustering.engine">default</str>
<str name="carrot.id">id</str>
<!-- Field name with the logical "title" of a each document
(optional) -->
<!--<str name="carrot.title">subject content_cluster tag</str>-->
<str name="carrot.title">title</str>
<!-- Field name with the logical "URL" of a each document (optional)
-->
<str name="carrot.url">url</str>
<!-- Field name with the logical "content" of a each document
(optional) -->
<!--<str name="carrot.snippet">title content</str>-->
<str name="carrot.snippet">content</str>
<!-- Apply highlighter to the title/ content and use this for
clustering. -->
<bool name="carrot.produceSummary">true</bool>
<int name="carrot.fragSize">100</int>
<str name="carrot.summarySnippets">2</str>
<!-- the maximum number of labels per cluster -->
<int name="carrot.numDescriptions">20</int>
<!-- produce sub clusters -->
<bool name="carrot.outputSubClusters">false</bool>
<str name="LingoClusteringAlgorithm.desiredClusterCountBase">30</str>
<!--<str name="qf">
text^0.5 features^1.0 name^1.2 sku^1.5 id^10.0 manu^1.1 cat^1.4
</str>
<str name="q.alt">*:*</str>
<str name="rows">10</str>
<str name="fl">*,score</str>-->
</lst>
<arr name="last-components">
<str>clustering</str>
</arr>
</requestHandler>
Regards,
Edwin
