Links to the original text: http://www.cnblogs.com/DamianZhou/p/4184026.html
Hadoop Cluster Modification and Cluster Version Adjustment
1. JDK modification
Posted on Wed, 17 Jul 2019 13:02:17 -0700 by pesoto74
HMater is responsible for homogenizing regions into each region server. One of the threaded tasks in the hmaster is dedicated to balancing and is executed every five minutes by default.
Each load balancing operation can be divided into two steps:
Generating Load Balancing Schedule
Assignment Manager class execution schedule
Let's go into ...
Posted on Sat, 13 Jul 2019 15:15:04 -0700 by phpnewbie8
Recently, in the company's unified log collection and processing platform, the choice of technology must be elastic search, because it can quickly retrieve system logs, log problem checking and power business chain calls can be quickly retrieved. Some fields of the company's application logs, such as content, do not need to be stored in es. A ...
Posted on Mon, 24 Jun 2019 17:09:12 -0700 by Tr4mpldUndrfooT
Use the list command to list all tables
hbase(main):001:0 > list
Listing tables using Java API
What follows is the use Java API The program lists all HBase List of tables in the table.
import org.apach ...
Posted on Fri, 17 May 2019 16:29:48 -0700 by po
1. Persistence operator cache
Introduction: Normally, an RDD does not contain real data, but only contains metadata information describing the RDD. If the cache method is called on the RDD, then the data of the RDD still has no real data. Until the first call of an action operator triggers the data generation of the RDD, then the cache operati ...
Posted on Sun, 05 May 2019 01:32:37 -0700 by techker
1. Configuring flume files
2. Data Acquisition Part Gets Through
2.1 Start zookeeper and cluster
2.2 Start kafka cluster
2.3 Start flume Cluster
2.4 Production data
3 Data Consumption Environment Preparedness
3.1 Add maven configuration
3.2 Add maven configuration
4 Consumer Data Tools
4.1 PropertiesUti ...
Posted on Mon, 22 Apr 2019 18:06:34 -0700 by softnmedia
MacOS installs HBase, which must be used for testing. Start with simplicity and configure with simplicity.
Installation can be done directly through brew:
brew install hbase
After successful installation, verify whether it is successful or not. If there is no accident, the output should be as follows:
RippleMBP:~ username$ hbase
Usage: hba ...
Posted on Sun, 24 Mar 2019 20:39:28 -0700 by 4evernomad
hbase single machine installation and deployment and phoneix single machine installation
Hbase download (jdk needs to be configured first)
tar -xzvf hbase-2.0.01-bin.tar.gz
mv hbase-220.127.116.11-ibin hbase
mv hbase-18.104.22.168 hbase
mv hbase /opt
Posted on Sun, 03 Feb 2019 14:45:16 -0800 by azhan
PUT Server Write Procedure + Source Code Analysis
The main contents of this paper are as follows:
mem write + wal write process and source code analysis
HBase is a distributed database based on LSM model. The full name of LSM is Log-Structured Merge-Trees, which is log-structured merge-tree. The most important featur ...
Posted on Sat, 02 Feb 2019 15:57:16 -0800 by Osiris Beato
Scenario: We mainly want to extract HBase data into hive. Sqoop does not support direct extraction of hbase, but we can do it by mapping HBase tables with Phoenix.
After Phoenix is installed, the existing data tables in HBase will not be mapped automatically, so it needs to be configured manually if you want to operate the exi ...
Posted on Wed, 30 Jan 2019 20:15:15 -0800 by RootKit