MaxCompute:Release notes

Console: The new console is now available for release.

SQL COST command: Fixed a bug where the SDK incorrectly detected placeholders in a PreparedStatement. The SDK now uses the syntax tree to determine placeholder positions, resolving incorrect placeholder detection.

Tunnel: The connection timeout and query timeout periods can now be specified.

Tunnel: Resolved an issue where invalid Tunnel endpoints caused connection failures.

External volumes: External volumes can now be created through the SDK.

Antler: Upgraded the Antler version.

Resource files: Upload and download resource files between 500 MB and 2 GB.

Tunnel: Added the Arrow interface to TableTunnel.

Core: Optimized memory usage during resource downloads.

Tunnel:

• Reconstructed the SQL DATE-related methods of ArrayRecord.

• Added the overloading method createStreamUploadSession to TableTunnel.

MaxCompute Query Acceleration (MCQA): Added the following overloading methods to SQLExecutor: getTaskName, getSubqueryId, getResult, and getResultSet.

Tunnel:

• Fixed an issue in OdpsTypeTransformer where DATETIME type values in SQL statements were out of the valid time range.

• Fixed an issue where TunnelBufferedWriter had high memory overhead.

MapReduce: Fixed an issue where ColumnBasedRecordComparator could throw ArrayOutOfBoundException.

Tunnel: The internal data type for the DATE type in ArrayRecord has changed from java.sql.Date to java.time.LocalDate.

Tunnel: Added the TableTunnel.FlushResult#reset() interface so that StreamRecordPack instances can be reused.

MapReduce: When a MapReduce task is converted to an SQL task, multiple inputs are now merged for better performance.

SQLExecutor: Added the SQLExecutor#getSummary() interface.

Core: Projects can now be iterated using filters. See Projects#iteratorByFilter(ProjectFilter filter) for details.

Tunnel:

• A single field in a MaxCompute table cannot exceed 8 MB due to storage limits. Split fields larger than 8 MB into multiple fields.

• Write timeout is now supported.

• Partitions can be automatically created in StreamTunnel.

SQLExecutor:

• Added a cache for the Tunnel endpoint.

• Multiple execution results can now be downloaded concurrently.

Core: Fixed an issue where Instance#getTaskCost(String taskName) returned an invalid value.

SQLExecutor: Fixed an issue where downloading execution results was suspended.