Yarn questions

Some common questions about Yarn Three Scheduling Strategies of Yarn Yarn preemptive Three Scheduling Strategies of Yarn    ideally, the application's request for Yarn resources should be satisfied immediately, but in reality, resources are often limited, especially in a very busy clus ...

Posted on Sat, 01 Feb 2020 23:47:07 -0800 by ShadowX

hadoop fully distributed

Article directory Fully distributed 1.1 installation configuration 1.2 solve problems 1.3 hadoop word frequency statistics 2HDFS node management 2.1 add nodes 2.2 deleting nodes 3NFS gateway 3.1nfs gateway purpose Characteristic 3.2 configure users 3.3 configure core-site.xml 3.4 NFSGW configu ...

Posted on Wed, 15 Jan 2020 02:11:18 -0800 by Call-911

Hadoop High Availability Cluster - HA

Prior to Hadoop2.0, Name Node of HDFS had a single point of failure.The so-called HA is highly available (7*24 hours of uninterrupted service).HA is strictly a HA mechanism that should be divided into components: HA of HDFS and HA of YARN.The HDFS HA feature solves a single point of failure by configuring Active/Standby two NameNodes to impleme ...

Posted on Sun, 29 Dec 2019 20:09:25 -0800 by tready29483

Java code implements the linked list structure, and has realized adding, deleting, and checking whether a node is included, and printing all nodes.

First of all, the general structure of our code is as follows: create a Node manager class, use an internal class to create an internal class, and use yourself as a Node. The code structure is like this This is to show the structure of the code with pictures. It belongs to the chain list structure, which is layer ...

Posted on Tue, 05 Nov 2019 11:46:09 -0800 by 1042

Hadoop Series-Hadoop Cluster Environment Construction

I. Cluster Planning A three-node Hadoop cluster is built here, in which three hosts deploy DataNode and NodeManager services, but only NameNode and ResourceManager services are deployed on hadoop001. Pre-conditions Hadoop runs on JDK and needs to be pre-installed. The installation steps are arranged separately to: Installation of JDK under L ...

Posted on Mon, 16 Sep 2019 04:19:53 -0700 by edup_pt

Environment Construction of Hadoop 2-8-0

title copyright date tags categories Environment Construction of Hadoop 2.8.0 true 2019-08-09 12:12:44 -0700 Liunx Hadoop Liunx Hadoop This article is about installing Hadoop cluster under centos7 ...

Posted on Sun, 25 Aug 2019 23:35:47 -0700 by gammaster

Case 5 - Mining High Weight Items in Microblog Advertisements

Microblog content (as shown): ID content Formula: TF: The frequency (frequency) of words appearing in a microblog. N: Total number of microblogs DF: How many microblogs have entries appeared? Four reduceTask s are used in the case. The subscript count starts at 0, three statistical word frequencies TF, and one statisti ...

Posted on Thu, 31 Jan 2019 04:18:16 -0800 by Jimbit

Building Yarn Based on High Availability HDFS Distributed Cluster

High-availability cluster building can refer to another blog of the bloggerhttps://blog.csdn.net/PowerBlogger/article/details/83018127 Cluster planning: The steps of building yarn based on HDFS high availability distributed cluster are as follows: Find mapred-site.xml.template in the hadoop installation directory and rename it ...

Posted on Wed, 30 Jan 2019 14:51:14 -0800 by Aethaellyn

Step by step install hive

The Apache Hive ™ data warehouse software facilitates reading, writing, and managing large datasets residing in distributed storage using SQL. Structure can be projected onto data already in storage. A command line tool and JDBC driver are provided to connect users to Hive. Hive is a framework of data management based on hadoop cluster system, ...

Posted on Sat, 26 Jan 2019 09:03:14 -0800 by Naug

Close Hadoop Cluster Error Reporting

Close Hadoop Cluster Error Reporting 1. Errors are reported as follows: [root@server4 sbin]# ./stop-yarn.sh stopping yarn daemons no resourcemanager to stop server5: no nodemanager to stop server6: no nodemanager to stop server4: no nodemanager to stop no proxyserver to stop [root@server4 sbin]# ./stop-dfs.sh Stopping name ...

Posted on Sat, 26 Jan 2019 04:42:14 -0800 by fj1200