GridGain 9.0.3 Release Notes

Overview

GridGain 9.0.3 is focused on improving CLI reporting and cluster performance.

New Features

Incremental Snapshots

With this release, you can make incremental snapshots. Incremental snapshots automatically find the previous snapshot for the specified tables and create a snapshot of all data since that point of time. For example:

cluster snapshot create --type=full --all

....

cluster snapshot create --type=incremental --all

Table Sequences

With this release, you can create a sequence that will be incremented or decremented automatically. These sequences can then be used to automatically fill the column in your tables.

To use sequences, create them with the SQL CREATE SEQUENCE command and then use sequence functions

CREATE SEQUENCE IF NOT EXISTS defaultSequence;

CREATE TABLE IF NOT EXISTS Person (
  id bigint default NEXTVAL('defaultSequence') primary key ,
  city_id bigint,
  name varchar,
  age int,
  company varchar
);

INSERT INTO Person (city_id, name, age, company) values (1, 'John', 30, 'newCorp'), (2, 'Jane', 24, 'oldCorp')

Cache Expiry

Expiry policies can now also be configured for caches. You can create the ttl column and use the EXPIRE AT clause to remove the rows at the specified time:

CREATE CACHE Accounts (
    accountNumber INT PRIMARY KEY,
    firstName VARCHAR,
    lastName VARCHAR,
    balance DOUBLE,
    ttl timestamp DEFAULT CURRENT_TIMESTAMP + INTERVAL '2' HOURS
) WITH PRIMARY_ZONE = 'CACHES' EXPIRE AT ttl;

Improvements and Fixed Issues

Issue ID	Category	Description
IGN-25261	Platforms and Clients	.NET: Tuples no longer require to have columns in the same order to be considered equal.
IGN-25173	Distributed Computing	Added TaskDescriptor to Compute API.
IGN-25113	SQL	Added support for FORMAT clause of CAST operator.
IGN-25019	Platforms and Clients	.NET: Fixed host name support in ClusterNode.Address.
IGN-24717	General	Improved error message when trying to connect to uninitialized cluster.
IGN-24446	Distributed Computing	.NET: Added MapReduce Compute API.
IGN-24329	Platforms and Clients	Fixed an issue with key-value API not working with tables that have a single column.
IGN-21178	Platforms and Clients	CPP: Added TLS support in C++ clients.
IGN-21176	SQL	Fixed an issue that caused a new row to be inserted instead of updating an existing row.

Issue ID

Known Limitations

Delay on DDL Requests

DDL requests, such as CREATE TABLE, take a few seconds each to complete. Because of that, large database initialization scripts may take longer than expected. This will be addressed in upcoming versions.

Performance of GridGain 8 Applications

Some scenarios may see lower performance when moving to GridGain 9. This is a temporary limitation, and the performance in these scenarios will be improved in upcoming versions.

High-Availability with Two Data Copies

When a partition loses majority of its copies, it becomes unavailable. This behavior is required for split-brain protection. Because of this, in a distribution zone with 2 data replicas, losing one node may lead to partial unavailability.

To achieve both split-brain protection and full availability with one node down, use 3 or more replicas.

Upcoming versions will add a high-availability mode that support full availability with one node down when using 2 replicas.

Data Center Replication with Multiple Data Centers

Complex Data Center Replication topologies (for example, the ones involving cycles) of 3 or more data centers are not supported. This will be addressed in an upcoming release.

GridGain 8 Features

The following features of GridGain 8 are not available in this version, and will be added in upcoming versions:

Rack-Awareness
SQL Offloading
Tracing
Service Grid
Write-Behind Caching

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Your comments and suggestions are always welcome. You can reach us here: https://gridgain.freshdesk.com/support/login.

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Last updated on Oct 03, 2024