Release 0.186#
Warning
This release has a stability issue that may cause query failures in large deployments due to HTTP requests timing out.
General#
Fix excessive GC overhead caused by map to map cast.
Fix implicit coercions for
ROW
types, allowing operations between compatible types such asROW(INTEGER)
andROW(BIGINT)
.Fix issue that may cause queries containing expensive functions, such as regular expressions, to continue using CPU resources even after they are killed.
Fix performance issue caused by redundant casts.
Fix
json_parse()
to not ignore trailing characters. Previously, input such as[1,2]abc
would successfully parse as[1,2]
.Fix leak in running query counter for failed queries. The counter would increment but never decrement for queries that failed before starting.
Reduce coordinator HTTP thread usage for queries that are queued or waiting for data.
Reduce memory usage when building data of
VARCHAR
orVARBINARY
types.Estimate memory usage for
GROUP BY
more precisely to avoid out of memory errors.Add queued time and elapsed time to the client protocol.
Add
query_max_execution_time
session property andquery.max-execution-time
config property. Queries will be aborted after they execute for more than the specified duration.Add
inverse_normal_cdf()
function.Add Geospatial functions including functions for processing Bing tiles.
Add Spill to disk for joins.
Add Redshift connector.
Resource groups#
Query Queues are deprecated in favor of Resource groups and will be removed in a future release.
Rename the
maxRunning
property tohardConcurrencyLimit
. The old property name is deprecated and will be removed in a future release.Fail on unknown property names when loading the JSON config file.
JDBC driver#
Allow specifying an empty password.
Add
getQueuedTimeMillis()
andgetElapsedTimeMillis()
toQueryStats
.
Hive#
Fix
FileSystem closed
errors when using Kerberos authentication.Add support for path style access to the S3 file system. This can be enabled by setting the
hive.s3.path-style-access=true
config property.
SPI#
Add an
ignoreExisting
flag toConnectorMetadata::createTable()
.Remove the
getTotalBytes()
method fromRecordCursor
andConnectorPageSource
.
Note
These are backwards incompatible changes with the previous SPI. If you have written a connector, you will need to update your code before deploying this release.