ClickHouse Backup & DR Archives

ClickHouse 26.8 LTS: 7 Essential Performance and HA Changes

ClickHouse 26.8 LTS read for production: adaptive aggregation, IEJoin, plan-based parallel replicas, Keeper on disk, always_fetch_mutated_part, and the 26.3 to 26.8 breaking-change checklist for self-managed and Cloud.

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ClickHouse Disaster Recovery Drills: Frequency, Scope, and Reporting

ChistaDATA Inc.

ClickHouse disaster recovery drills are structured tests designed to validate your analytical database’s recovery procedures before a real failure occurs. Running regular ClickHouse disaster recovery drills is how engineering teams build confidence that their backup-restore […]

ClickHouse Data Compression Techniques for Time-series Datasets

Using ClickHouse-Backup for Comprehensive ClickHouse® Backup and Restore Operations

ChistaDATA Inc.

ClickHouse®-Backup Tool ClickHouse® has become a cornerstone technology for organizations handling massive analytical workloads, but with great data comes great responsibility for backup and disaster recovery. The clickhouse® -backup tool emerges as the de facto […]

Inverted Indexes in ClickHouse

ChistaDATA Inc.

Inverted Indexes in ClickHouse: Revolutionizing Full-Text Search for Data Analytics Introduction In the rapidly evolving landscape of data analytics, the ability to efficiently search through massive datasets has become crucial for organizations seeking actionable insights. […]

ClickHouse Backup Toolkit: An Oracle RMAN-Like Approach

Shiv Iyer

ClickHouse Backup Toolkit Implementing a comprehensive backup and recovery toolkit for ClickHouse is essential to ensure data integrity, consistency, and reliability, forming the core of ClickHouse Data Reliability Engineering. While ClickHouse lacks a built-in tool […]

Replicating Data across ClickHouse Servers

clickhouse-copier – A reliable workhorse for copying data across ClickHouse servers

ChistaDATA Inc.

Introduction ClickHouse comes with useful tools for performing various tasks. clickhouse-copier is one among them and as the name suggests, it is used for copying data from one ClickHouse server to another. The servers can […]

How does Checkpointing work in ClickHouse?

Shiv Iyer

Introduction Checkpointing is a process of periodically saving the state of a database system to disk, so that in the event of a failure, the system can be quickly restored to a known good state. […]

How to Recover ClickHouse After ZooKeeper Metadata is Corrupted?

ClickHouse Troubleshooting: How to Restore/Recover ClickHouse after ZooKeeper Metadata is Corrupted/Lost

ChistaDATA Inc.

Introduction When you are building a highly available ClickHouse Infrastrstucture for scale and performance we use ZooKeeper for ClickHouse Replication Management and Operations with ReplicatedMergeTree table engine. You can expect ZooKeeper to face data loss […]

* Everything changes over time – Our blogs/posts and comments changes over time, That’s how it should be! Whatever we comment from ChistaDATA Inc. Teams (including Shiv Iyer) and other stakeholders or guest bloggers posted here are never permanent, These things worked for us. But, there is no guarantee they will work for you too, When using the recommendations from ChistaDATA or MinervaDB or MinervaSQL or any other online resources / Google, You must test the advice before applying them to your production systems, and always invest for a robust Database DR solution, Thank you for understanding.

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