This guide details how to restore a CDH cluster after MySQL metadata loss caused by an accidental deletion of the MySQL data directory, covering database locking, locating deleted file handles, reconstructing shared and independent tablespaces, and verifying consistency to bring the platform back online quickly.
This guide walks through diagnosing a MySQL metadata loss in a CDH cluster, locking the database, locating deleted file handles, restoring shared and independent tablespace files, fixing table structures, verifying consistency, and explains the underlying Linux and MySQL mechanisms.
This guide explains how to download JDK, Maven, Scala and Spark 3.3.0, modify the Spark pom and configuration files for CDH 6.3.2, compile Spark with Maven, deploy the binaries to a client node, set up spark‑sql and spark‑submit scripts, and address common runtime issues.
This guide explains how to deploy Apache Kyuubi on a CDH 6 cluster, replace HiveServer2 with Kyuubi, integrate Spark 3, apply necessary patches, configure environment and Spark settings, and optimize engine sharing for various workloads, providing complete code snippets and step‑by‑step instructions.
This guide explains how to prepare a CDH‑based Spark environment for Kerberos authentication, covering prerequisite knowledge, classpath adjustments, HBase configuration files, Spark‑Env settings, user permission grants, Spark‑Submit execution, and common troubleshooting steps.
The article describes how to troubleshoot and fix Oozie shell‑action failures when submitting Flink jobs on a CDH 6.3 cluster with Kerberos, detailing environment‑variable conflicts, error messages, and the final solution using a clean environment and custom FLINK_CONF_DIR settings.
This article explains how to integrate Apache Phoenix with CDH‑based HBase, covering Phoenix overview, version selection, parcel installation, HBase configuration, command‑line usage, mapping existing tables, creating schemas and views, building secondary indexes, and comparing different index types for performance optimization.
This article walks through the full‑stack process of migrating and compiling the CDH Hadoop distribution on Kunpeng cloud servers, covering environment setup, dependency installation, source code adjustments, common build errors, and final packaging for a production‑ready big‑data platform.
Learn step‑by‑step how to install Anaconda parcels on a CDH cluster to create isolated Python 3 environments, set up a local Conda package repository with Nginx, use wget and bandersnatch to mirror packages, and configure private pip sources for Windows and Linux nodes.
This guide details the required system environment, download links, and offline file list for setting up Cloudera CDH 5.14 on a CentOS 6.7 server, including JDK, parcels, manager package, and MySQL connector, and explains how to upload them via Filezilla.
This guide details the required system environment, download sources, and step‑by‑step offline file preparation for installing Cloudera's CDH 5.14 on a CentOS 6.7 server, including JDK, parcels, and MySQL connector setup.
This guide walks through preparing three CentOS 6.9 nodes, configuring hostnames, time sync, password‑less SSH, disabling IPv6, installing JDK, downloading CDH 5.4, setting up core‑site and hdfs‑site XML files, formatting the NameNode, starting HDFS services, configuring YARN and MapReduce, and verifying the installations via the Web UI.
