flume mac

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 resolves the shell command, throwing an exception if the specified configuration file does not exist. According to the command contains "no-reload-conf" parameters, decide which way to load t

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.

{ 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

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

IconAs shown in the Red box section, I do stability testing, when the flume run a few days later, I found that the counter value gradually become larger, to a certain value, and then become smaller, there is a cycle of the process, and therefore the desire to produce research, the following to see:if (Txneventcount = = 0) { sinkcounter.incrementbatchemptycount (); } else if (Txneventcount = = batchsize) { Sinkcounter.incrementbatchc

internal selection of a valid sink for processingThe exception section, we found that triggered the informsinkfailed () method, let's take a look at the methodpublic void Informfailure (T failedobject) {//if There are no Backoff this method is a no-op. if (!shouldbackoff) {return; } failurestate state = Statemap.get (Failedobject); Long now = System.currenttimemillis (); Long delta = now-state.lastfail; /* * When do we increase the Backoff period? * We Basically calculate the ti

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

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

correspond to CH Annel, and sink can only correspond to one Channelshell command: Bin/flume-ng agent--conf conf--conf-file example.conf--name A1- dflume.root.logger=info,console-conf Global profile--conf-file name of a single agent configuration file-name agent console Display to console start above script in another console: using telnet connection: telnet localhost (host name) 44444 (port number) [infO-org.apache.flume.sink.loggersink.process (

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

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.

good performance where multiple disks is not available for checkpoint and data Directori Es.It is natural that the channel data is synchronized to disk and performance degrades, but the checkpoint mechanism is added to prevent data loss.For the deformed memory channel, which is the memory channel and the file channel used together, we do not explain here, because this mixed use, the official also give hints-not recommended in the production environment to use.The reason for this is that data lo

a certain range, it will flushprivate void Flusheventbatch (listFlush is the event in the EventList that is now being saved and emptied1. Put the event into the configured channelFor (event event:events) { listHere is the detailed procedure for putting the event into the channel, but here you notice that there are two selector getchannel methods, because there are two types of channel selector modes: Multiplexing and Replication if (restart) { logger.info ("Restarting in {}ms, ex

2017-09-06 Zhu Big Data and cloud computing technologies Any production system will produce a large number of logs during operation, and the log often hides a lot of valuable information. These logs are stored for a period of time and are cleaned up before the method is parsed. With the development of technology and the improvement of analytical ability, the value of log is re-valued. Before you analyze these logs, you need to collect the logs that are scattered across production systems. Thi

What is a. Flume?Flume is a distributed, reliable system. It can efficiently collect, consolidate, and move large amounts of data from different sources to data center storage.Flume is a top-level project under Apache. Flume not only collects consolidated log data, because the data source can be customized, flume can b

Reprint: http://blog.csdn.net/jek123456/article/details/65658790In a logstash scene, I produced why can not use flume instead of Logstash doubt, so consulted a lot of materials summarized here, most of them are predecessors of the work experience, add some of my own thinking in the inside, I hope to help everyone.This article is suitable for readers who have a certain big data base to read, but if you do not have the technical basis, you can continue

1. OverviewToday, I would add a blog about flume, which was omitted when explaining the highly available Hadoop platform, and this blog will tell you the following: Flume ng Brief Introduction Single point flume ng construction, operation Highly Available flume ng construction Failover test Pre