Hi
I submit the Apache CarbonData 2.3.1 (RC1) to your vote. 1. Key features of this release are highlighted as below.. - Fixed performance issues by changing index id. - Fixed Secondary Index till segment level with SI as datamap, make Secondary Index as a coarse grain Datamap and use SI for Presto queries - Fixed Exception in loading data with overwrite on partition table. - Fixed spark integration compile issues. - Fixed Exception in loading data with overwrite on partition table. - Fixed index issues of "sort_columns" - Fixed index issues about multiple sessions table. - Fixed Exception in loading data with overwrite on partition table. - Fixed DDM sentence about column query failed. 2. The tag to be voted upon : apache-carbondata-2.3.1-rc1 : https://github.com/apache/carbondata/commit/d326118db86414a7895a76dafebb881ba1e52c1c 3.The artifacts to be voted on are located here: https://dist.apache.org/repos/dist/dev/carbondata/2.3.1-rc1/ 4. A staged Maven repository is available for review at: https://repository.apache.org/content/repositories/orgapachecarbondata-1075/ 5. Release artifacts are signed with the following key: https://people.apache.org/keys/committer/chenliang613.asc Please vote on releasing this package as Apache CarbonData 2.3.1, The vote will beopen for the next 72 hours and passes if a majority of at least three +1 PMC votes are cast. [ ] +1 Release this package as Apache CarbonData 2.3.1 [ ] 0 I don't feel strongly about it, but I'm okay with the release [ ] -1 Do not release this package because...