hit-lacus opened a new pull request #549: KYLIN-3905 Enable shrunken dictionary default URL: https://github.com/apache/kylin/pull/549 In dev mail list's discussion, I suggest to enable shrunken dictionary by default, and received some dev's aggrement. When using bitmap measure on a large cardinality column(require global dictionaty), build base cuboid step need frequent cache swap so it cannot finished within a reasonable period. When shrunken dictionary enabled, a new step will be added to build separated dictionary for each `InputSplit`, Mapper of *BuildBaseCuboid* step only has to fetch a smaller dictionary for itself, instead of a larger global dictionary. It will reduce cache swap and make *BuildBaseCuboid* step run as quicker as possible.
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
