MapReduce is a high performance batch distributed computing framework for parallel analysis and processing of massive data. Compared with traditional methods, MapReduce is more inclined to solve problems brutally and deal with huge amounts of data in simple, rough and effective ways. By inputting, splitting and ...
Posted on Sun, 20 Jan 2019 23:33:12 -0500 by deezin
Deploy Flume to the application server
Source,Channel,Sink What types are there?
Source type | Explain
Avro Source | Support Avro Agreement (actually Avro RPC)，Built in support
Thrift Source | Support Thrift Protocol, built-in support
Exec Source ...
Posted on Sun, 20 Jan 2019 02:45:13 -0500 by yankeefan238
Introduction to ribbonRibbon is a client side load balancer which gives you a lot of control over the behaviour of HTTP and TCP clients. Feign already uses Ribbon, so if you are using @FeignClient then this section also applies.
From the official website
Ribbon is a load balancing client, which can control the behavior of htt and tcp very well. ...
Posted on Sat, 19 Jan 2019 21:27:13 -0500 by noon
Development environment: InteliJ IDEA
Operating system: macOS Mojave
Elastic search version: Aliyun 6.3.2_with_X-Pack
Client version: REST Client 6.3.2
1. Create Aliyun ES instance in advance and open the whitelist of public address access.
2. Pre-create index and mapping (using Kibana Dev Tools)
properties: (book_id (keywor ...
Posted on Sat, 19 Jan 2019 20:36:12 -0500 by phpjaco
Pictures from http://www.cnblogs.com/qq951785919/
Server: Represents an instance of tomcat, a java process represented; listens on port 8005 and only receives "SHUTDOWN". The ports that servers listen on cannot be the same, so when multiple instances are started on the same phy ...
Posted on Sat, 19 Jan 2019 07:33:12 -0500 by altumdesign
Recently, when installing Apache with CentOS 7, using yum to install Apache error reporting: This article is suitable for CentOS 7 and RHEL7
# yum install httpd
Appearance: cannot find a valid baseurl for repo:base/7/x86_64.
To solve this problem, there are a lot of solutions on the Internet, saying that the network is not working, but many o ...
Posted on Sat, 12 Jan 2019 23:06:10 -0500 by matt6805
First of all, distinguish between AppMaster and Driver. Any task running on yarn must have an AppMaster, and any Spark task will have a Driver. Driver is the process running SparkContext (which will build Task Scheduler and DAGScheduler). Of course, you can do many non-Spark things on Driver, which will only be performed on Driver, but by Spark ...
Posted on Fri, 11 Jan 2019 02:21:11 -0500 by sing2trees
Why do you have to start with spring-boot:run after integrating jsp?
stay Spring Boot - Integrating Jsp/FreeMarker In this article, we use two ways to start
mvn clean spring-boot:run
main method startupTest results show that jsp pages can be rendered normally by maven boot, but can not be rendered by main method boot. this paper ana ...
Posted on Wed, 09 Jan 2019 21:18:09 -0500 by AGISB
This article focuses on the operation of Java decompression, and a subsequent article on compression will be written.
Reminder: Some of the fragments in the article seem to have a lot of code. In fact, there are only a few sentences to remove trycatch and release resources that are really useful. In fact, decompression is very simple. I ...
Posted on Wed, 09 Jan 2019 05:12:10 -0500 by puREp3s+
Home page: www.howardliu.cn
Bowen: Zookeeper client error: Packet len8854970 is out of range!
This is a production environment using zookeeper exceptions, the error is java.io.IOException: Packet len8854970 is out of range!. Then I changed a namespace, and there was no mistake. I thought it happened by accident, so I didn't pay attention to ...
Posted on Tue, 08 Jan 2019 14:09:10 -0500 by PHPSpirit