This is a limitation of the raw measure; It uses a dictionary to compress the values, but that may make the dictionary very big. This is one of the reasons that Kylin mark the raw measure as deprecated.
Best regards, Shaofeng Shi 史少锋 Apache Kylin PMC Email: [email protected] Apache Kylin FAQ: https://kylin.apache.org/docs/gettingstarted/faq.html Join Kylin user mail group: [email protected] Join Kylin dev mail group: [email protected] you Zhuang <[email protected]> 于2019年7月15日周一 下午11:27写道： > I use raw measure to serve original records consults. But why does raw > measure need dictionary? If I have a lot of raw measures, performance is > slow. I see code below : > > @Override > public List<TblColRef> getColumnsNeedDictionary(FunctionDesc functionDesc) { > TblColRef literalCol = functionDesc.getParameter().getColRefs().get(0); > return Collections.singletonList(literalCol); > } > > > My raw measures are always double, not big. So I don’t need dictionary at > all. > > I use raw measures for historical reasons, so I expect someone to tell me > why and how I can modify to use raw bytes. >
