12.79. Release 0.167
General Changes
- Fix planning failure when a window function depends on the output of another window function.
- Fix planning failure for certain aggregation with both
DISTINCT and GROUP BY.
- Fix incorrect aggregation of operator summary statistics.
- Fix a join issue that could cause joins that produce and filter many rows
to monopolize worker threads, even after the query has finished.
- Expand plan predicate pushdown capabilities involving implicitly coerced types.
- Short-circuit inner and right join when right side is empty.
- Optimize constant patterns for
LIKE predicates that use an escape character.
- Validate escape sequences in
LIKE predicates per the SQL standard.
- Reduce memory usage of
min_by() and max_by().
- Add
transform_keys(), transform_values() and zip_with() lambda functions.
- Add
levenshtein_distance() function.
- Add JMX stat for the elapsed time of the longest currently active split.
- Add JMX stats for compiler caches.
- Raise required Java version to 8u92.
Security Changes
- The
http.server.authentication.enabled config option that previously enabled
Kerberos has been replaced with http-server.authentication.type=KERBEROS.
- Add support for LDAP Authentication using username and password.
- Add a read-only System Access Control named
read-only.
- Allow access controls to filter the results of listing catalogs, schemas and tables.
- Add access control checks for SHOW SCHEMAS and SHOW TABLES.
Web UI Changes
- Add operator-level performance analysis.
- Improve visibility of blocked and reserved query states.
- Lots of minor improvements.
JDBC Driver Changes
- Allow escaping in
DatabaseMetaData patterns.
Hive Changes
- Fix write operations for
ViewFileSystem by using a relative location.
- Remove support for the
hive-cdh4 and hive-hadoop1 connectors which
support CDH 4 and Hadoop 1.x, respectively.
- Remove the
hive-cdh5 connector as an alias for hive-hadoop2.
- Remove support for the legacy S3 block-based file system.
- Add support for KMS-managed keys for S3 server-side encryption.
Cassandra Changes
- Add support for Cassandra 3.x by removing the deprecated Thrift interface used to
connect to Cassandra. The following config options are now defunct and must be removed:
cassandra.thrift-port, cassandra.thrift-connection-factory-class,
cassandra.transport-factory-options and cassandra.partitioner.
SPI Changes
- Add methods to
SystemAccessControl and ConnectorAccessControl to
filter the list of catalogs, schemas and tables.
- Add access control checks for SHOW SCHEMAS and SHOW TABLES.
- Add
beginQuery and cleanupQuery notifications to ConnectorMetadata.
