Release 0.149

General Changes

  • Fix runtime failure for queries that use grouping sets over unions.
  • Do not ignore null values in array_agg().
  • Fix failure when casting row values that contain null fields.
  • Fix failure when using complex types as map keys.
  • Fix potential memory tracking leak when queries are cancelled.
  • Fix rejection of queries that do not match any queue/resource group rules. Previously, a 500 error was returned to the client.
  • Fix trim() and rtrim() functions to produce more intuitive results when the argument contains invalid UTF-8 sequences.
  • Add a new web interface with cluster overview, realtime stats, and improved sorting and filtering of queries.
  • Add support for FLOAT type.
  • Rename query.max-age to query.min-expire-age.
  • optimizer.columnar-processing and optimizer.columnar-processing-dictionary properties were merged to optimizer.processing-optimization with possible values disabled, columnar and columnar_dictionary
  • columnar_processing and columnar_processing_dictionary session properties were merged to processing_optimization with possible values disabled, columnar and columnar_dictionary
  • Change %y (2-digit year) in date_parse() to evaluate to a year between 1970 and 2069 inclusive.
  • Add queued flag to StatementStats in REST API.
  • Improve error messages for math operations.
  • Improve memory tracking in exchanges to avoid running out of Java heap space.
  • Improve performance of subscript operator for the MAP type.
  • Improve performance of JOIN and GROUP BY queries.

Hive Changes

  • Clean up empty staging directories after inserts.
  • Add hive.dfs.ipc-ping-interval config for HDFS.
  • Change default value of hive.dfs-timeout to 60 seconds.
  • Fix ORC/DWRF reader to avoid repeatedly fetching the same data when stripes are skipped.
  • Fix force local scheduling for S3 or other non-HDFS file systems.