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access_time 2 months ago

Network Attached Storage are commonly used in many enterprises where files are stored remotely on those servers.  They typically provide access to files using network file sharing protocols such as  ...

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Fix for Hadoop 3.2.1 namenode format issue on Windows 10

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access_time 3 months ago

Issue When installing Hadoop 3.2.1 on Windows 10,  you may encounter the following error when trying to format HDFS  namnode: ERROR namenode.NameNode: Failed to start namenode. The error happens when running the following comm...

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Compile and Build Hadoop 3.2.1 on Windows 10 Guide

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access_time 3 months ago

This article provides detailed steps about how to compile and build Hadoop (incl. native libs) on Windows 10. The following guide is based on Hadoop release 3.2.1. ...

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Install Hadoop 3.2.1 on Windows 10 Step by Step Guide

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access_time 3 months ago

This detailed step-by-step guide shows you how to install the latest Hadoop (v3.2.1) on Windows 10. It also provides a temporary fix for bug HDFS-14084 (java.lang.UnsupportedOperationException INFO).

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access_time 5 months ago

The following code snippet shows how to list and kill Hadoop jobs including (MapReduce and YARN jobs).

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access_time 5 months ago

Hadoop provides a number of CLIs that can be used to perform many tasks/activities. This code snippet shows you how to check file/folder size in HDFS.

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access_time 5 months ago

Hadoop provides a number of CLIs. hadoop job command can be used to retrieve running job list.

You can also use YARN resource manager UI to view the jobs too.

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local_offer spark local_offer hadoop local_offer pyspark local_offer oozie local_offer hue

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access_time 8 months ago

When submitting Spark applications to YARN cluster, two deploy modes can be used: client and cluster. For client mode (default), Spark driver runs on the machine that the Spark application was submitted while for cluster mode, the driver runs on a random node in a cluster. On this page, I am goin...

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access_time 9 months ago

Scenario Recently I created an Oozie workflow which contains one Spark action. The Spark action master is yarn and deploy mode is cluster. Each time when the job runs about 30 minutes, the application fails with errors like the following: Application applicatio...

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access_time 9 months ago

In one of my previous articles about Password Security Solution for Sqoop , I mentioned creating credential using hadoop credential command. The credentials are stored in JavaKey...

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