Release notes for Serverless Computing in Hologres, organized by version. Each version lists new capabilities and behavior changes separately so you can quickly assess what's new and what might affect your existing workloads.
V4.0
V4.0.1
New features
| Feature | Description |
|---|---|
| DLF foreign table support | Serverless Computing can now read from and write to Data Lake Formation (DLF) foreign tables. For more information, see OSS data lake acceleration. |
V3.1
V3.1.11
New features
| Feature | Description |
|---|---|
| Synchronous compaction during batch import | When running batch import tasks with serverless resources, you can now run compaction synchronously using serverless resources. Previously, compaction ran asynchronously using the instance's own resources. For more information, see Compact data files (beta). |
V3.1.5
New features
| Feature | Description |
|---|---|
| Daily usage limit for Serverless Computing | Set a daily resource usage cap for Serverless Computing. Once the limit is reached, SQL queries fall back to the instance's own resources or return an error. For more information, see Daily usage limit. |
V3.1.3
New features
| Feature | Description |
|---|---|
| Encrypted table support | Serverless Computing can now read from and write to encrypted tables, including Hologres internal tables and Hologres external tables created in MaxCompute. Enable the hg_serverless_computing_enable_encrypted_table Grand Unified Configuration (GUC) parameter to activate this feature. For more information, see Data encryption. |
V3.1.1
New features
| Feature | Description |
|---|---|
| Adaptive serverless computing | Large queries can now automatically use serverless resources. For more information, see Work with serverless computing. |
V3.0
V3.0.26
New features
| Feature | Description |
|---|---|
| Stored procedure support | Serverless computing resources can now execute Data Manipulation Language (DML) and Data Query Language (DQL) statements inside stored procedures. For more information, see Stored procedures. |
| INSERT OVERWRITE support | Serverless computing resources can now execute INSERT OVERWRITE statements. For more information, see INSERT OVERWRITE. |
V3.0.19
New features
| Feature | Description |
|---|---|
| RESHARDING support | Serverless computing resources can now execute RESHARDING tasks. For more information, see Manage table groups and shards. |
V3.0.10
New features
| Feature | Description |
|---|---|
| Query queue-level serverless resource assignment | Configure a specific query queue to route all its SQL statements to serverless computing resources. For more information, see Work with query queues. |
V3.0.9
New features
| Feature | Description |
|---|---|
| CREATE TABLE AS support | Serverless computing resources can now execute CREATE TABLE AS statements. Each execution generates two records in the metadata warehouse: one for the CREATE TABLE AS statement and one for the INSERT statement that actually runs on serverless resources. For more information, see CREATE TABLE AS. |
V3.0.1
New features
| Feature | Description |
|---|---|
| COPY operation support | Serverless computing resources can now perform COPY operations, including the hg_dump_to_oss command to export data to OSS. Each COPY operation generates two records in the metadata warehouse: one for the COPY statement and one for the INSERT statement that actually runs on serverless resources. For more information, see COPY. |
V2.1
V2.1.38
New features
| Feature | Description |
|---|---|
| Eight-hour query execution limit | An eight-hour maximum execution duration is enforced for queries run on serverless resources. Serverless Computing uses the smaller of the eight-hour limit and the value of statement_timeout. For more information, see Manage queries. |
V2.1.31
Behavior changes
| Change | Description |
|---|---|
| DLF foreign tables fall back to instance resources | If a SQL statement references DLF foreign tables, the query automatically uses instance reserved resources instead of serverless resources. Serverless Computing does not support data queries or writes through DLF foreign tables. For more information, see Work with serverless computing. |
V2.1.18
New features
| Feature | Description |
|---|---|
hologres.hg_serverless_computing_query_log view | Use this view to query historical tasks executed on serverless computing resources. |
V2.1.17
New features
| Feature | Description |
|---|---|
| Serverless Computing release | The Serverless Computing feature is released. For more information, see Serverless Computing. |