flume wiki

flume– primary knowledge of Flume, source and sinkDirectoryBasic conceptsCommon source sourcesCommon sinkBasic conceptsWhat's the name flume?Distributed, reliable, large number of log collection, aggregation, and mobility tools.? eventsevent, which is the byte data of a row of data, is the basic unit of Flume sending f

Recently learned the use of the next flume, in line with the company will be independent of the development of the log system, the official website user manual: Http://flume.apache.org/FlumeUserGuide.htmlFlume schema A. ComponentFirst move, the structure of the Internet.As you can see from the diagram, the Flume event is defined as a data stream, a data stream consisting of an agent, which is actually a JVM

The neutrality and copyrights of wikis are very important, they are very difficult to build. In China? A Wiki is a collaborative work platform or called an open editing system. The so-called collaborative work, that is, it allows people browsing the Web page to revise the page, its profile ... What does a Wiki do. Wikis use simplified syntax to replace complex HTML, plus Web interface editing tools to reduc

{ return null; } }4. Return to a usable sinkIf a failure occurs, then look at the execution logic of the first half of the code in the process:Long now = System.currenttimemillis (); while (!failedsinks.isempty () Failedsinks.peek (). Getrefresh () Prerequisites: Failedsinks is not empty and the sink activation time of the team header is less than the current time1, poll out the queue of the first Failedsink2, using the current sink processing, if the processing is successful, then

I am testing HDFs sink, found that the sink side of the file scrolling configuration items do not play any role, configured as follows:a1.sinks.k1.type=hdfsa1.sinks.k1.channel=c1a1.sinks.k1.hdfs.uselocaltimestamp=truea1.sinks.k1.hdfs.path=hdfs:/ /192.168.11.177:9000/flume/events/%y/%m/%d/%h/%ma1.sinks.k1.hdfs.fileprefix=xxxa1.sinks.k1.hdfs.rollinterval= 60a1.sinks.k1.hdfs.rollsize=0a1.sinks.k1.hdfs.rollcount=0a1.sinks.k1.hdfs.idletimeout=0The configur

1. Introduction to Flume Flume is a distributed, reliable, andHigh AvailabilityA system that aggregates massive logs. It supports customization of various data senders to collect data. Flume also provides simple processing of data and writes it to various data receivers (customizable) capabilities.Design goals: (1) Reliability When a node fails, logs can be trans

This article is a simple example of the flume official document in the practice and description of the official example Http://flume.apache.org/FlumeUserGuide.html#a-simple-example Flume's Netcat source automatically creates a socket Server that can fetch data simply by sending the data to the netcat source of this socket,flume. Examples are as follows: 1, first configure the agent: in Flume's conf dire

This paper will take timestampinterceptor as an example to analyze how interceptors work in Flume.First, consider the implementation structure of the Interceptor.1. Interceptor interface is realizedThe method of the interface is defined as follows: public void Initialize (); Public event intercept (event event); Public list public void close ();/** Builder implementations must have a no-arg constructor * * Public Interface Builder extends configurable { Publ IC Interceptor Build (); }2.

I. Introduction of FlumeFlume is a distributed, reliable, and highly available mass-log aggregation system that enables the customization of various data senders in the system for data collection, while Flume provides the ability to simply process the data and write to various data-receiving parties (customizable).Design objectives:(1) ReliabilityWhen a node fails, the log can be transmitted to other nodes without loss.

ObjectiveFirst look at the definition of event in Flume official websiteA line of text content is deserialized into an event "serialization is the process of converting an object's state into a format that can be persisted or transmitted. Relative to serialization is deserialization, which transforms a stream into an object. These two processes combine to make it easy to store and transfer data ", the maximum definition of event is 2048 bytes, exceedi

From Bin/flume this shell script can see Flume starting from the Org.apache.flume.node.Application class, which is where the main function of Flume is.The Main method first parses the shell command, assuming that the specified configuration file does not exist and then dumps the exception.According to the command contains the "no-reload-conf" parameters, decided

Flume load Balancing is the choice of a certain algorithm per sink output to the specified place, if the file output is very large, load balancing is still necessary, through the output of multiple channels to alleviate the output pressureFlume built-in load balancing algorithm by default is round robin, polling algorithm, ordered selectionHere's a look at the specific examples:# Name The components in this agenta1.sources = R1a1.sinks = K1 k2a1.chann

Multiplexing technology is intended to send an event to a specific channel based on configuration information.A source instance can specify multiple channels, but a sink instance can only specify one channel.Flume supports fanning out the flow from one source to multiple channels. There is modes of fan out, replicating and multiplexingFlume supports two modes of output from source to multiple channel: copy and Reuse1. In copy mode, the event data received by source is output to all channel confi

Basic concepts of flume, data stream model, and flume data stream1. Basic concepts of flume AllFlumeAll related terms are in italic English. The meanings of these terms are as follows. FlumeA reliable and distributed system for collecting, aggregating, and transmitting massive log data. Web ServerOne generationEvents. Agent flumeA node in the system contains thre

What is wiki )? First, we need to clarify that the inventor of the Wiki concept is Ward cunnhan. What does the word wiki mean? According to the FAQ, the word wikiwiki comes from wee Kee in Hawaii, which originally meant "quick. In fact, wiki is simple and fast. You can see that w