Release 0.228¶
General Changes¶
Reduce excessive memory usage by ExchangeClient.
Improve coordinator stability on parsing functions that may create large constant arrays/maps/rows (e.g.,
SEQUENCE
,REPEAT
,ARRAY[...]
, etc) by delaying the evaluation on these functions on workers.Optimize queries with
LIMIT 0
.Allow Bing Tiles at zoom level 0.
Hive Changes¶
Fix ORC writer rollback failure due to exception thrown during rollback.
Improve ORC read performance for variants and fixed width numbers.
Spi Changes¶
Move most
RowExpression
utilities to thepresto-expressions
module.