Snowpark Connect for Spark release notes for 2026¶

Cache table type when running saveAsTable

Optimize literal input for substring and type casting for coalesce

Handle decimal overflow in avg/mean and fix decimal type coercion

Iceberg - Preserve grants on overwrite

Standardize SQL passthrough mode

Optimize from_utc_timestamp/to_utc_timestamp for literal timezone

Handle JSON null values in structured types to match Spark semantics

Emulate integral types on creating tables from SQL

Fix edge case with mapping nested rows in Scala UDFs

Fix how Parquet handles read and write of complex structured datatypes

Support save ignore argument for parquet files

Add support for artifact repository

Fix array nullability in Scala UDxF

Fix log1p for args from (-1, 0) range

Fix first_value and last_value in aggregate context

Fix reading DayTimeIntervalType for Scala client

Handle timezones correctly in Scala UDFs

Support Java 11 and 17 without any configuration

Support snowpark-submit for python 3.9

Enhance init_spark_session to be usable in snowpark-submit workflow

Fixed split function issue

Downgraded snowflake-snowpark-python dependency to version 1.44

Fixed Neo4j dialect matching to improve SQL translation

Fixed operation ID returned in execute responses to be consistent

Fixed gRPC metadata handling for TCP channel connections

Added support for partition_hint in mapPartitions operations

Added XML reader support for scenarios with user-defined schemas

Preserve hidden columns after various DataFrame operators

Fix issues for scala udf input types (byte, binary, scala.math.BigDecimal)

Add snowpark-submit User Defined Args to comment

Fix config unset error for session configuration.

Use copy into to load CSV files in parallel.

Fix writes for DataFrames using outer joins.

Handle nulls in Scala UDFs.

Optimize CTE query generation with parameter protection.

Avoid casting arguments of DATEDIFF.

Fix appending partitioned files and reading of null partitions.

Make a 10X performance improvement for conversion between base 10 and 16 using SQL.

Overwrite only modified partitions for parquet files.

Updated logic to detect if Snowpark Connect for Spark is running on XP.

Support writing to a table with variant data type in Snowflake.

Remove unnecessary info logs.

Move Java tests out of Scala tests job to a separate job.

Update the dependency version for gcsfs.

Fix serializing Scala tuples.

Fix loading huge JSON files.

Implement small fixes for customer issues.

Implement fixes for struct comparisons.

Add handling for 0-column DataFrames.

Correct upload file path.

Fix Upload_files_if_needed not running in parallel.

Improve input type inference when UDF input types are not defined in the proto.

Fix NA edge cases.

Support reading single JSON BZ2 file.

Support Scala UDFs in server-side Snowpark Connect for Spark.

Implement cast between string and daytime.

Add support for Scala UDFs in group_map.

Reduce generated workload names.

Fixed JAVA_HOME handling for Windows.

Support neo4j data source via JDBC.