Hi Sudip, I'm not really an expert in this matter but I came recently across isSkipQuery() method in AbstractRecordReader, it's javadoc states:
*Returns true if reader should skip all of the columns, reporting number of > records only. Handling of a skip query is storage plugin-specific.* You can take a look at JSONRecordReader for an example on how to use isSkipQuery() to optimize the reading. Thanks On Thu, Aug 6, 2015 at 2:01 AM, Sudip Mukherjee <[email protected] > wrote: > Hi, > I am using apache drill recently with mongodb and trying to write a basic > plug-in for apache solr. Wanted to know how does the plug-in know that an > count(*) query has been applied so that the query to data-source can be > optimized? Can i get it if I extend AbstractExprVisitor class? > > Thanks,Sudip Mukherjee -- Abdelhakim Deneche Software Engineer <http://www.mapr.com/> Now Available - Free Hadoop On-Demand Training <http://www.mapr.com/training?utm_source=Email&utm_medium=Signature&utm_campaign=Free%20available>
