Why Does Hadoop 2.2.0 Issue a 'Native Library Loading' Warning on CentOS, and How Can I Fix It?-javaTutorial-php.cn

Home

Java

javaTutorial

Why Does Hadoop 2.2.0 Issue a 'Native Library Loading' Warning on CentOS, and How Can I Fix It?

Patricia Arquette

Dec 25, 2024 am 03:06 AM

Why Does Hadoop 2.2.0 Issue a

Trouble with Hadoop: Warning on Native Library Loading

When initiating Hadoop 2.2.0 on CentOS with start-dfs.sh or stop-dfs.sh, users encounter the following error: "WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable." This notice arises due to discrepancies in the native library compilation platform.

Despite setting the necessary environment variables, the issue persists due to the native Hadoop library (libhadoop.so.1.0.0) being compiled on a 32-bit system instead of the expected 64-bit CentOS environment.

While this warning does not affect Hadoop's functionality, it can be eliminated by recompiling libhadoop.so.1.0.0 on a 64-bit system and replacing the existing 32-bit version.

For Ubuntu users, step-by-step instructions for recompiling the source code can be found at: http://www.ercoppa.org/Linux-Compile-Hadoop-220-fix-Unable-to-load-native-hadoop-library.htm

The above is the detailed content of Why Does Hadoop 2.2.0 Issue a 'Native Library Loading' Warning on CentOS, and How Can I Fix It?. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

How do I use Maven or Gradle for advanced Java project management, build automation, and dependency resolution?Mar 17, 2025 pm 05:46 PM

The article discusses using Maven and Gradle for Java project management, build automation, and dependency resolution, comparing their approaches and optimization strategies.

How do I create and use custom Java libraries (JAR files) with proper versioning and dependency management?Mar 17, 2025 pm 05:45 PM

The article discusses creating and using custom Java libraries (JAR files) with proper versioning and dependency management, using tools like Maven and Gradle.

How do I implement multi-level caching in Java applications using libraries like Caffeine or Guava Cache?Mar 17, 2025 pm 05:44 PM

The article discusses implementing multi-level caching in Java using Caffeine and Guava Cache to enhance application performance. It covers setup, integration, and performance benefits, along with configuration and eviction policy management best pra

How can I use JPA (Java Persistence API) for object-relational mapping with advanced features like caching and lazy loading?Mar 17, 2025 pm 05:43 PM

The article discusses using JPA for object-relational mapping with advanced features like caching and lazy loading. It covers setup, entity mapping, and best practices for optimizing performance while highlighting potential pitfalls.[159 characters]

How does Java's classloading mechanism work, including different classloaders and their delegation models?Mar 17, 2025 pm 05:35 PM

Java's classloading involves loading, linking, and initializing classes using a hierarchical system with Bootstrap, Extension, and Application classloaders. The parent delegation model ensures core classes are loaded first, affecting custom class loa

See all articles