diff --git a/presto-docs/src/main/sphinx/release.rst b/presto-docs/src/main/sphinx/release.rst index 23a56a7526432..ead596ddff71a 100644 --- a/presto-docs/src/main/sphinx/release.rst +++ b/presto-docs/src/main/sphinx/release.rst @@ -5,6 +5,7 @@ Release Notes .. toctree:: :maxdepth: 1 + release/release-0.217 release/release-0.216 release/release-0.215 release/release-0.214 diff --git a/presto-docs/src/main/sphinx/release/release-0.217.rst b/presto-docs/src/main/sphinx/release/release-0.217.rst new file mode 100644 index 0000000000000..cdadb96b24601 --- /dev/null +++ b/presto-docs/src/main/sphinx/release/release-0.217.rst @@ -0,0 +1,60 @@ +============= +Release 0.217 +============= + +General Changes +--------------- + +* Fix poor query planning performance for queries submitted when the cluster does not have the minimum required number of workers available. +* Fix a bug that caused a union of a table with a ``VALUES`` statement to execute on a single machine, which may result in out of memory errors. +* Improve performance of some queries that use window functions by eliminating redundant shuffles. +* Add grouped execution support for window functions. +* Add support for the ``BOOLEAN`` type for ``EXPLAIN IO`` statements. +* Add support for choosing distribution type for semi joins based on estimated cost when the session property ``join_distribution_type='AUTOMATIC'`` is set. +* Add support for collecting table statistics on demand with the ``ANALYZE`` statement. +* Add a config option (``query.stage-count-warning-threshold``) to specify a per-query threshold for the number of stages. + When this threshold is exceeded, a ``TOO_MANY_STAGES`` warning is raised. +* Add per-task peak user memory usage to query statistics. +* Add CLI support for showing the amount of data spilled during query execution. +* Add :func:`ST_Points` function. +* Add :doc:`/connector/elasticsearch`. +* Remove the system memory pool and related configuration properties (``resources.reserved-system-memory``, ``deprecated.legacy-system-pool-enabled``) entirely. + System memory pool was deprecated in 0.201, and it was unused by default since that release. All memory allocations will now be served from the general/user memory pool. + + +Web UI +------ + +* Improve live plan to show data transfer statistics as edge labels. +* Improve live plan to contain more information about each node. For example, table scan nodes now show the name of the tables that are being scanned. +* Add the ability to zoom when viewing plans for completed queries. +* Add support for showing the amount of data spilled during query execution. + + +Hive Connector Changes +---------------------- + +* Fix an issue where a partially successful rollback of a write could cause data loss and corrupt the metastore. + The ``hive.skip-target-cleanup-on-rollback`` configuration property can be used to skip deleting target directories when partition creation is rolled back. +* Fix an issue where creating a table on S3 could fail for S3 prefixes without any associated objects (e.g., empty S3 directories). +* Add support for ``ANALYZE`` statement in the Hive connector. + It's possible to specify a list of partitions to collect statistics for using the ``WITH`` properties of the ``ANALYZE`` statement. +* Add configuration property ``hive.temporary-staging-directory-enabled`` and session property ``temporary_staging_directory_enabled`` + to control whether a temporary staging directory should be used for write operations. +* Add configuration property ``hive.temporary-staging-directory-path`` and session property ``temporary_staging_directory_path`` + to control the location of temporary staging directory that is used for write operations. + The ``${USER}`` placeholder can be used to use a different location for each user (e.g., ``/tmp/${USER}``). + + +JDBC Connector Changes +---------------------- + +* Add support for defining procedures. +* Add support for providing table statistics. + + +SPI Changes +----------- + +* Add new SPIs for the ``ANALYZE`` statement. By default, running the ``ANALYZE`` statement for a connector that does not implement these SPIs results in + an error o``USER_ERROR`` with error code ``NOT_SUPPORTED``.