11.21. Release 0.186
Warning
This release has a stability issue that may cause query failures in large deploymentsdue to HTTP requests timing out.
General Changes
- Fix excessive GC overhead caused by map to map cast.
- Fix implicit coercions for ROW types, allowing operations betweencompatible types such as ROW(INTEGER) and ROW(BIGINT).
- Fix issue that may cause queries containing expensive functions, such as regularexpressions, 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 wouldincrement 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 or VARBINARY 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 and query.max-execution-time configproperty. 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 Changes
- Query Queues are deprecated in favor of Resource Groupsand will be removed in a future release.
- Rename the maxRunning property to hardConcurrencyLimit. The oldproperty name is deprecated and will be removed in a future release.
- Fail on unknown property names when loading the JSON config file.
JDBC Driver Changes
- Allow specifying an empty password.
- Add getQueuedTimeMillis() and getElapsedTimeMillis() to QueryStats.
Hive Changes
- Fix FileSystem closed errors when using Kerberos authentication.
- Add support for path style access to the S3 file system. This can be enabledby setting the hive.s3.path-style-access=true config property.
SPI Changes
- Add an ignoreExisting flag to ConnectorMetadata::createTable().
- Remove the getTotalBytes() method from RecordCursor and ConnectorPageSource.
Note
These are backwards incompatible changes with the previous SPI.If you have written a connector, you will need to update your codebefore deploying this release.
原文: https://prestodb.io/docs/current/release/release-0.186.html