I have code that uses the DateMathParser and this used to work in 5.x but is no longer accepted in 6.x:
time:[NOW-2DAY TO 2016-07-19Z] org.apache.solr.common.SolrException: Invalid Date in Date Math String:'2016-07-19Z' at org.apache.solr.util.DateMathParser.parseMath(DateMathParser.java:241) This is in a unit test, so I can change it, but seems like regression to me?