Q1 2019

  • JOIN syntax compatible with SQL standard:
    • Mutliple JOINs in single SELECT
  • Protobuf and Parquet input and output formats
  • Import/export from HDFS and S3
  • Lower metadata size in ZooKeeper
  • Adaptive index granularity for MergeTree engine family

Q2 2019

  • JOIN execution improvements:
    • Distributed join not limited by memory
  • Resource pools for more precise distribution of cluster capacity between users

Q3 2019

  • Fine-grained authorization
  • Integration with external authentication services