Compute
Elastic Cloud Server
Huawei Cloud Flexus
Bare Metal Server
Auto Scaling
Image Management Service
Dedicated Host
FunctionGraph
Cloud Phone Host
Huawei Cloud EulerOS
Networking
Virtual Private Cloud
Elastic IP
Elastic Load Balance
NAT Gateway
Direct Connect
Virtual Private Network
VPC Endpoint
Cloud Connect
Enterprise Router
Enterprise Switch
Global Accelerator
Management & Governance
Cloud Eye
Identity and Access Management
Cloud Trace Service
Resource Formation Service
Tag Management Service
Log Tank Service
Config
OneAccess
Resource Access Manager
Simple Message Notification
Application Performance Management
Application Operations Management
Organizations
Optimization Advisor
IAM Identity Center
Cloud Operations Center
Resource Governance Center
Migration
Server Migration Service
Object Storage Migration Service
Cloud Data Migration
Migration Center
Cloud Ecosystem
KooGallery
Partner Center
User Support
My Account
Billing Center
Cost Center
Resource Center
Enterprise Management
Service Tickets
HUAWEI CLOUD (International) FAQs
ICP Filing
Support Plans
My Credentials
Customer Operation Capabilities
Partner Support Plans
Professional Services
Analytics
MapReduce Service
Data Lake Insight
CloudTable Service
Cloud Search Service
Data Lake Visualization
Data Ingestion Service
GaussDB(DWS)
DataArts Studio
Data Lake Factory
DataArts Lake Formation
IoT
IoT Device Access
Others
Product Pricing Details
System Permissions
Console Quick Start
Common FAQs
Instructions for Associating with a HUAWEI CLOUD Partner
Message Center
Security & Compliance
Security Technologies and Applications
Web Application Firewall
Host Security Service
Cloud Firewall
SecMaster
Anti-DDoS Service
Data Encryption Workshop
Database Security Service
Cloud Bastion Host
Data Security Center
Cloud Certificate Manager
Edge Security
Situation Awareness
Managed Threat Detection
Blockchain
Blockchain Service
Web3 Node Engine Service
Media Services
Media Processing Center
Video On Demand
Live
SparkRTC
MetaStudio
Storage
Object Storage Service
Elastic Volume Service
Cloud Backup and Recovery
Storage Disaster Recovery Service
Scalable File Service Turbo
Scalable File Service
Volume Backup Service
Cloud Server Backup Service
Data Express Service
Dedicated Distributed Storage Service
Containers
Cloud Container Engine
Software Repository for Container
Application Service Mesh
Ubiquitous Cloud Native Service
Cloud Container Instance
Databases
Relational Database Service
Document Database Service
Data Admin Service
Data Replication Service
GeminiDB
GaussDB
Distributed Database Middleware
Database and Application Migration UGO
TaurusDB
Middleware
Distributed Cache Service
API Gateway
Distributed Message Service for Kafka
Distributed Message Service for RabbitMQ
Distributed Message Service for RocketMQ
Cloud Service Engine
Multi-Site High Availability Service
EventGrid
Dedicated Cloud
Dedicated Computing Cluster
Business Applications
Workspace
ROMA Connect
Message & SMS
Domain Name Service
Edge Data Center Management
Meeting
AI
Face Recognition Service
Graph Engine Service
Content Moderation
Image Recognition
Optical Character Recognition
ModelArts
ImageSearch
Conversational Bot Service
Speech Interaction Service
Huawei HiLens
Video Intelligent Analysis Service
Developer Tools
SDK Developer Guide
API Request Signing Guide
Terraform
Koo Command Line Interface
Content Delivery & Edge Computing
Content Delivery Network
Intelligent EdgeFabric
CloudPond
Intelligent EdgeCloud
Solutions
SAP Cloud
High Performance Computing
Developer Services
ServiceStage
CodeArts
CodeArts PerfTest
CodeArts Req
CodeArts Pipeline
CodeArts Build
CodeArts Deploy
CodeArts Artifact
CodeArts TestPlan
CodeArts Check
CodeArts Repo
Cloud Application Engine
MacroVerse aPaaS
KooMessage
KooPhone
KooDrive
On this page
Help Center/ GaussDB(DWS)/ Product Bulletin/ Product Notice/ Version 9.0.x (cloud native 3.0)

Version 9.0.x (cloud native 3.0)

Updated on 2024-09-03 GMT+08:00

[V9.0.3 Release Date] February 2024

[Release date of V9.0.2]: November 2023

Version 9.0.3

[Added new features]

Table 1 New features in 9.0.3

Scenario

Feature

Description

Reference

Data lakehouse

Readable and writable foreign tables

Readable and writable foreign tables are supported, allowing for read and write on a single foreign table.

-

Foreign table query performance optimization

Predicate pushdown for in and not in enhances partition pruning.

-

Complex data type support

Complex data types such as map, struct, array, and bytea/blob are supported.

-

Parallel foreign table export

Parallel exporting of foreign tables is supported with enable_insert_ft_dop (default: disabled).

-

INSERT OVERWRITE

The insert overwrite operation can be performed on either the entire table or individual partitions.

INSERT

HiveMetaStore statistics accessibility

HiveMetaStore statistics of external schema tables can be read.

-

Decoupled storage and compute

Asynchronous read optimization

Asynchronous read is optimized.

-

Data can be imported in parallel to tables with decoupled storage and compute.

Data can be imported to in parallel to OBS tables with decoupled storage and compute (enable_insert_dop enabled, which is disabled by default). Exporting data in parallel consumes more CPU and memory resources.

-

INSERT OVERWRITE for OBS tables with decoupled storage and compute

OBS tables with decoupled storage and compute support INSERT OVERWRITE.

INSERT

Hot and cold local disk cache

The local disk cache supports hot and cold settings. Different cache policies can be configured for different partitions.

-

Enhanced engine

jsonb/json for column-storage

Column storage supports the jsonb/json type.

-

Version 9.0.2

[Added new features]

Table 2 New features in version 9.0.2

Scenario

Feature

Description

Reference

Data lakehouse

One-click lakehouse

create external schema is used to directly connect to HiveMetaStore metadata, avoiding complex create foreign table operations.

-

Parallel foreign table ANALYZE

This function is controlled by the enable_parallel_analyze parameter. By default, this function is enabled, which significantly improves the speed of collecting ANALYZE statistics.

Note: Foreign tables do not have the AUTO ANALYZE capability. You are advised to manually perform ANALYZE to collect statistics after data import.

-

parquet/orc read and write for foreign tables

Overwriting, appending, and multi-level partition read/write are supported.

CREATE FOREIGN TABLE (SQL on OBS or Hadoop)

Foreign table read acceleration by disk cache

Foreign tables can use the local disk cache for read acceleration.

-

Foreign table data masking and row-level access control.

Foreign tables support datamasking and row-level access control.

-

Decoupled storage and compute

Decoupled storage and compute

You can specify COLVERSION=3.0 to create a column-store table as an OBS table with decoupled storage and compute. In this way, user data is stored in OBS and is charged on demand.

CREATE TABLE

Asynchronous read and write for OBS tables with decoupled storage

OBS tables that use decoupled storage can perform asynchronous reads and writes.

-

Parallel ANALYZE for OBS tables with decoupled storage

OBS tables with decoupled storage support parallel ANALYZE, which is controlled by the GUC parameter enable_parallel_analyze. This function is enabled by default.

-

Backup and restoration

OBS tables with separated storage and compute support only full backup and restoration.

-

Elastic VW

Elastic Virtual Warehouse (VW) supports read/write acceleration. It takes 12 minutes to start an elastic VW, which is irrelevant to the current node scale, number of objects, and data volume. Integrating additional elastic VWs can bolster the system's read/write throughput, concurrent processing, and resource isolation.

Periodically Adding or Deleting DWS 3.0 Logical Clusters

Elastic scale-out and ordinary scale-out.

Elastic scale-out does not redistribute data on OBS. Classic scaling redistributes all data. The system automatically determines the scaling mode based on whether the value of table_buckets divided by the total number of DNs exceeds the [min_table_buckets_per_dn, max_table_buckets_per_dn] range.

Impact on the System

OBS monitoring view

Added the OBS monitoring view PGXC_OBS_IO_SCHEDULER_PERIODIC_STATS.

-

Disk cache view

Added the disk cache views PGXC_DISK_CACHE_STATS and PGXC_DISK_CACHE_ALL_STATS.

-

Clearing residual files

Added functions pgxc_scan_residualfiles and pgxc_rm_scan_residualfiles_archive to detect and clear residual files.

-

Performance optimization

Memory sorting performance optimization

Optimized the memory sorting performance.

-

[Behavior Change]

  1. VACUUM FULL/ANALYZE/CLUSTER are not supported for the entire database. No error is reported for the syntax, but the syntax is not executed actually. They are supported only for a single table.
  2. OBS tables with decoupled storage and compute do not support delta tables. If enable_delta is set to on, no error is reported, but delta tables do not take effect.
  3. Only scale-out is supported. During scale-out, tables that are being scaled out can only be queried.
  4. The default sampling ratio is adjusted to one ten-thousandth by setting default_statistics_target to -0.01.

We use cookies to improve our site and your experience. By continuing to browse our site you accept our cookie policy. Find out more

Feedback

Feedback

Feedback

0/500

Selected Content

Submit selected content with the feedback