On 6/20/2018 12:35 PM, Yunee Lee wrote: > I have two questions. > > 1. solr index on verion 4.6.0 and there are multiple date fields as the type > DateField in schema.xml > When I upgraded to version 5.2.1 with new data type Trie* for integer, float, > string and date. > Only date fields are not upgraded properly with the following error. > "trace": "java.lang.ClassCastException: java.lang.String cannot be cast > to java.util.Date\n\tat
<snip> > 2. I also ran the Index upgrader then the core is Not registering correctly > with > "msg": "java.lang.String cannot be cast to java.util.Date" > > Is there any solutions with config changes without reindexing entire > documents? If you change the type on ANY field, you have to reindex, and it's typically best to build the entire index again from scratch. There are no tricks to avoid reindexing when changing your schema. https://wiki.apache.org/solr/HowToReindex Here's a four year old thread from this mailing list that might be relevant: http://lucene.472066.n3.nabble.com/Trouble-with-TrieDateFields-td4143082.html Thanks, Shawn
