- Add
slice
,md5
,array_min
andarray_max
functions. - Fix bug that could cause queries submitted soon after startup to hang forever.
- Fix bug that could cause
JOIN
queries to hang forever, if the right side of theJOIN
had too little data or skewed data. - Improve index join planning heuristics to favor streaming execution.
- Improve validation of date/time literals.
- Produce RPM package for Presto server.
- Always redistribute data when writing tables to avoid skew. This can be disabled by setting the session property
redistribute_writes
or the config propertyredistribute-writes
to false.
The experimental support for big queries has been removed in favor of the new resource manager which can be enabled via the experimental.cluster-memory-manager-enabled
config option. The experimental_big_query
session property and the following config options are no longer supported: experimental.big-query-initial-hash-partitions
, experimental.max-concurrent-big-queries
and experimental.max-queued-big-queries
.