Serverless computing release notes

Hologres version

Feature

Description

V4.1.1

Improves system throughput and stability by automatically isolating workloads. During high-load periods, queries are routed to the Serverless Computing resource pool.

For more information, see Adaptive serverless computing.

V4.1.1

Serverless Computing now supports data masking.

For more information, see Data masking.

Hologres version

Feature

Description

V4.0.1

Serverless Computing now supports read and write operations on DLF foreign tables.

For more information, see Accelerate queries on data in OSS data lakes based on DLF.

Hologres version

Feature

Description

V3.1.11

For batch import tasks, compaction now runs synchronously on serverless resources, rather than asynchronously on instance resources.

For more information, see Compaction (beta).

V3.1.5

You can configure a daily usage limit for Serverless Computing. If the limit is exceeded, queries automatically fall back to instance resources or return an error.

For more information, see Daily usage limit.

V3.1.3

You can read from and write to encrypted tables, including Hologres encrypted internal tables and MaxCompute encrypted foreign tables, by enabling the GUC parameter hg_serverless_computing_enable_encrypted_table.

For more information, see Data encryption.

V3.1.1

Adaptive serverless computing is available to automatically handle large queries by using serverless resources.

For more information, see Usage of Serverless Computing.

Hologres version

Feature

Description

V3.0.26

• Serverless Computing now supports DML and DQL operations within a stored procedure.

• Serverless Computing now supports INSERT OVERWRITE operations.

For more information, see Stored procedures and INSERT OVERWRITE.

V3.0.19

Serverless Computing now supports RESHARDING tasks.

For more information, see Table group and shard count operations.

V3.0.10

You can now configure a query queue to run all its SQL queries on Serverless Computing.

For more information, see Query queue.

V3.0.9

Serverless Computing now supports CREATE TABLE AS (CTAS) statements.

A CTAS statement generates two records in the metadata warehouse: one for the CTAS statement itself and another for the underlying INSERT statement. For more information, see CREATE TABLE AS.

V3.0.1

Serverless Computing now supports COPY tasks, including exporting data to OSS by using the hg_dump_to_oss command.

A COPY task generates two records in the metadata warehouse: one for the COPY statement itself and another for the underlying INSERT statement. The INSERT statement runs on serverless resources. For more information, see COPY.

Hologres version

Feature

Description

V2.2.42

Serverless Computing now supports RESHARDING tasks.

For more information, see Table group and shard count operations.

V2.2.14

Serverless Computing now supports DQL tasks.

For more information, see Serverless Computing.

V2.2.10

Queries that run on Serverless Computing now have a maximum execution time of 8 hours.

The actual maximum execution time for a query is the lesser of this 8-hour limit and the value of the statement_timeout parameter. For more information, see Manage queries.

V2.2.7

The slow query log now records all tasks that run on Serverless Computing by default.

Before V2.2.7, the slow query log recorded only failed queries and successful DML queries that ran for more than 100 ms.

V2.2.4

SQL statements that run on Serverless Computing and involve DLF foreign tables automatically fall back to instance resources.

At the time of this release, Serverless Computing did not support querying or writing data in DLF foreign tables. For more information, see Usage of Serverless Computing.

V2.2.1

Added the following monitoring metrics for Serverless Computing:

• Number of queued queries for Serverless Computing

• Resource quota usage of Serverless Computing

For more information, see Monitoring metrics in the Hologres console.

Hologres version

Feature

Description

V2.1.38

Queries that run on Serverless Computing now have a maximum execution time of 8 hours.

The actual maximum execution time for a query is the lesser of this 8-hour limit and the value of the statement_timeout parameter. For more information, see Manage queries.

V2.1.31

SQL statements that run on Serverless Computing and involve DLF foreign tables automatically fall back to instance resources.

Serverless Computing currently does not support querying or writing data in DLF foreign tables. For more information, see Usage of Serverless Computing.

V2.1.18

The hologres.hg_serverless_computing_query_log view is supported.

This view shows the execution history of tasks that ran on Serverless Computing.

V2.1.17

This release introduces the Serverless Computing feature.

For more information, see Serverless Computing.