Checking which queries are blocked or active in ClickHouse Blocked queries in ClickHouse can negatively impact performance by causing delays in query execution. When a query is blocked, it is not able to proceed […]
Troubleshooting Expensive Query Operations by Disk I/O Disk I/O performance can greatly impact ClickHouse performance because ClickHouse stores data on disk and relies on disk I/O to read and write data. If disk I/O performance […]
Troubleshooting Index corruption in ClickHouse To troubleshoot index corruption in ClickHouse, you can follow these steps: Check the error logs: Look for any error messages related to index corruption in the ClickHouse logs. This can […]
Analyzing ClickHouse with strace strace can also be used to analyze the behavior of a ClickHouse server and identify performance bottlenecks. Here are some steps to use strace for analyzing ClickHouse: Identify the ClickHouse process […]
Feature comparison between Hadoop and ClickHouse? Hadoop and ClickHouse are both big data processing platforms, but they have different design goals and use cases. Here is a comparison of some key features: Data Processing: Hadoop […]
ClickHouse comparison with Vertica – Why ClickHouse is recommended for real-time Analytics? ClickHouse and Vertica are both columnar databases that are optimized for analytical queries and real-time analytics. However, there are some key differences between […]
Why Hadoop is not recommended for real-time Analytics? Hadoop is a powerful, open-source ecosystem for storing and processing large datasets, but it is not well-suited for real-time analytics. Here are a few reasons why Hadoop […]
How Thread Handling is implemented in ClickHouse? ClickHouse uses a thread pool to handle and manage threads. The thread pool is responsible for handling incoming client connections, executing SQL queries, and performing other tasks. Each […]
Case study for integrating Kafka with ClickHouse for real-time stream processing in FinTech companies A financial technology (FinTech) company may integrate Kafka with ClickHouse to enable real-time stream processing of financial data. Here is an […]
Why ClickHouse is recommended for real-time Analytics than Hadoop? ClickHouse is a column-oriented, open-source analytics database that is designed for real-time OLAP (online analytical processing) and OLTP (online transaction processing) use cases. It is optimized […]
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