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martint merged 1 commit into from
Jun 29, 2022
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Add Trino 388 release notes #13004

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1 change: 1 addition & 0 deletions docs/src/main/sphinx/release.rst
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Expand Up @@ -10,6 +10,7 @@ Release notes
.. toctree::
:maxdepth: 1

release/release-388
release/release-387
release/release-386
release/release-385
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49 changes: 49 additions & 0 deletions docs/src/main/sphinx/release/release-388.md
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# Release 388 (29 June 2022)

## General

* Add support for `EXPLAIN (TYPE LOGICAL, FORMAT JSON)`. ({issue}`12694`)
* Add `use_exact_partitioning` session property to re-partition data when the
upstream stage's partitioning does not exactly match what the downstream stage
expects. ({issue}`12495`)
* Improve read performance for `row` data types. ({issue}`12926`)
* Remove the grouped execution mechanism, including the
`grouped-execution-enabled`, `dynamic-schedule-for-grouped-execution`,
and `concurrent-lifespans-per-task` configuration properties and the
`grouped_execution`, `dynamic_schedule_for_grouped_execution`, and
`concurrent_lifespans_per_task` session properties. ({issue}`12916`)

## Security

* Add [refresh token](https://oauth.net/2/refresh-tokens/) support in OAuth 2.0. ({issue}`12664`)

## Delta Lake connector

* Add support for setting table and column comments with the `COMMENT`
statement. ({issue}`12971`)
* Support reading tables with the property `delta.columnMapping.mode=name`. ({issue}`12675`)
* Allow renaming tables with an explicitly set location. ({issue}`11400`)

## Elasticsearch connector

* Remove support for Elasticsearch versions below 6.6.0. ({issue}`11263`)

## Hive connector

* Improve performance of listing files and generating splits when recursive
directory listings are enabled and tables are stored in S3. ({issue}`12443`)
* Fix incompatibility that prevents Apache Hive 3 and older from reading
timestamp columns in files produced by Trino's optimized Parquet
writer. ({issue}`12857 `)
* Prevent reading from a table that was modified within the same Trino
transaction. Previously, this returned incorrect query results. ({issue}`11769`)

## Iceberg connector

* Add support for reading `tinyint` columns from ORC files. ({issue}`8919`)
* Add the ability to configure the schema for materialized view storage tables. ({issue}`12591`)
* Remove old deletion-tracking files when running `optimize`. ({issue}`12617`)
* Fix failure when invoking the `rollback_to_snapshot` procedure. ({issue}`12887`)
* Fix query failure when reading the `$partitions` table after table
partitioning changed. ({issue}`12874`)