效率 https://www.cnblogs.com/zhujiabin/p/6168671.html?utm_source=itdadao&utm_medium=referral  https://openmind.iteye.com/blog/1845219 https://cwiki.apache.org/confluence/display/FLUME/Flume%27s+Memory+Consumption Linux下开启Hadoop的9000端口方法 https://blog.cs…

//对象是可变的键控集合, //"numbers, strings, booleans (true and false), null, and undefined" 不是对象的解释 The simple types of JavaScript are numbers, strings, booleans (true and false), null, and undefined. All other values are objects. Numbers, strings, and b…

[从源码学设计] Flume 之 memory channel 目录 [从源码学设计] Flume 之 memory channel 0x00 摘要 0x01 业务范畴 1.1 用途和特点 1.2 Channel 1.3 研究重点 1.4 实际能够学到什么 1.5 总述 0x02 定义 2.1 接口 2.2 配置参数 2.2.1 channel属性 2.4 Semaphore和Queue 2.5 MemoryTransaction 0x03 使用 3.1 channel如何使用 3.2 sour…

http://java-performance.info/memory-consumption-of-java-data-types-2/ 如何在Java中分配超过-Xmx限制的内存 http://it.deepinmind.com/java/2014/03/21/allocate-large-heap-in-java.html…

翻译自官网flume1.8用户指南,原文地址:Flume 1.8.0 User Guide 篇幅限制,分为以下5篇: [翻译]Flume 1.8.0 User Guide(用户指南) [翻译]Flume 1.8.0 User Guide(用户指南) source [翻译]Flume 1.8.0 User Guide(用户指南) Sink [翻译]Flume 1.8.0 User Guide(用户指南) Channel [翻译]Flume 1.8.0 User Guide(用户指南) Proces…

本次遇到的问题描述,日志采集同步时,当单条日志(日志文件中一行日志)超过2M大小,数据无法采集同步到kafka,分析后,共踩到如下几个坑.1.flume采集时,通过shell+EXEC(tail -F xxx.log 的方式) source来获取日志时,当单条日志过大超过1M时,source端无法从日志中获取到Event.2.日志超过1M后,flume的kafka sink 作为生产者发送给日志给kafka失败,kafka无法收到消息.以下针对踩的这两个坑做分析,flume 我使用的是1.9.0…

flume是一个分布式.可靠.和高可用的海量日志采集.聚合和传输的系统.支持在日志系统中定制各类数据发送方,用于收集数据;同时,Flume提供对数据进行简单处理,并写到各种数据接受方(比如文本.HDFS.Hbase等)的能力 .     一.什么是Flume? flume 作为 cloudera 开发的实时日志收集系统,受到了业界的认可与广泛应用.Flume 初始的发行版本目前被统称为 Flume OG(original generation),属于 cloudera.但随着 FLume 功能的…

http://www.eclipse.org/mat/ 两大功能: 1.find memory leaks 2.reduce memory consumption 安装步骤: 1. 打开 eclipse 2. help - marketplace - search<MemoryAnalyzer> 3. 按照提示,一步一步进行,耐心等待 4. 安装完成之后会提示重新启动eclipse 重启之后,window - preferences 里就出现 Memory Analyzer…

By Fabrice Marguerie Despite what a lot of people believe, it's easy to introduce memory and resources leaks in .NET applications. The Garbage Collector, or GC for close friends, is not a magician who would completely relieve you from taking care of…

https://hoytech.com/vmtouch/ [root@localhost ~]# git clone git://github.com/hoytech/vmtouch.git 正克隆到 'vmtouch'... remote: Counting objects: , done. remote: Total (delta ), reused (delta ), pack 接收对象中: ), 285.79 KiB | 24.00 KiB/s, 完成. 处理 delta 中: ), 完…

The Performance Zone is brought to you in partnership with New Relic. Quickly learn how to use Docker and containers in general to create packaged images for easy management, testing, and deployment of software. It has sometimes been suggested that S…

1. 如何安装? 1)将下载的flume包,解压到/home/hadoop目录中 2)修改 flume-env.sh 配置文件,主要是JAVA_HOME变量设置 root@m1:/home/hadoop/flume-1.5.0-bin# cp conf/flume-env.sh.template conf/flume-env.sh root@m1:/home/hadoop/flume-1.5.0-bin# vi conf/flume-env.sh # Licensed to the Apache…

Component Interface Type Alias Implementation Class org.apache.flume.Channel memory org.apache.flume.channel.MemoryChannel org.apache.flume.Channel jdbc org.apache.flume.channel.jdbc.JdbcChannel org.apache.flume.Channel file org.apache.flume.channel.…

在spark中<Memory usage of state in Spark Structured Streaming>讲解Spark内存分配情况,以及提到了HDFSBackedStateStoreProvider存储多个版本的影响:从stackoverflow上也可以看到别人遇到了structured streaming中内存问题,同时也对问题做了分析<Memory issue with spark structured streaming>:另外可以从spark的官网问题修复列…

The "Out of socket memory" error I recently did some work on some of our frontend machines (on which we run Varnish) at StumbleUpon and decided to track down some of the errors the Linux kernel was regularly throwing in kern.log such as: Feb 25…

转自:http://www.aboutyun.com/thread-8917-1-1.html 问题导读1.什么是flume2.flume的官方网站在哪里?3.flume有哪些术语?4.如何配置flume数据源码? 一.什么是Flume? flume 作为 cloudera 开发的实时日志收集系统,受到了业界的认可与广泛应用.Flume 初始的发行版本目前被统称为 Flume OG(original generation),属于 cloudera.但随着 FLume 功能的扩展,Flume OG…

Source within Flume is a kind of Server for outside client. Sink within Flume is a kind of client for ourside server such as HDFS, MongoDB, Kafka. Component Interface Type Alias Implementation Class org.apache.flume.Channel memory org.apache.flume.ch…

flume是一个分布式.可靠.和高可用的海量日志采集.聚合和传输的系统.支持在日志系统中定制各类数据发送方,用于收集数据;同时,Flume提供对数据进行简单处理,并写到各种数据接受方(比如文本.HDFS.Hbase等)的能力 . 一.什么是Flume? flume 作为 cloudera 开发的实时日志收集系统,受到了业界的认可与广泛应用.Flume 初始的发行版本目前被统称为 Flume OG(original generation),属于 cloudera.但随着 FLume 功能的扩展,F…

一.什么是Flume? flume 作为 cloudera 开发的实时日志收集系统,受到了业界的认可与广泛应用.Flume 初始的发行版本目前被统称为 Flume OG(original generation),属于 cloudera.但随着 FLume 功能的扩展,Flume OG 代码工程臃肿.核心组件设计不合理.核心配置不标准等缺点暴露出来,尤其是在 Flume OG 的最后一个发行版本 0.94.0 中,日志传输不稳定的现象尤为严重,为了解决这些问题,2011 年 10 月 22 号,c…

here were various changes to memory related DMVs, DBCC memory status, and Perfmon counters in SQL Server 2012 as part of the redesign of the Memory Manager component of SQLOS. The Memory Manager redesign resulted in being able to more accurately size…

一.什么是Flume? flume 作为 cloudera 开发的实时日志收集系统,受到了业界的认可与广泛应用. flume的特点: flume是一个分布式.可靠.和高可用的海量日志采集.聚合和传输的系统.支持在日志系统中定制各类数据发送方,用于收集数据;同时,Flume提供对数据进行简单处理,并写到各种数据接受方(比如文本.HDFS.Hbase等)的能力 . flume的数据流由事件(Event)贯穿始终.事件是Flume的基本数据单位,它携带日志数据(字节数组形式)并且携带有头信息,这些Ev…

本期内容: 1. Flume on HDFS案例回顾 2. Flume推送数据到Spark Streaming实战 3. 原理绘图剖析 1. Flume on HDFS案例回顾 上节课要求大家自己安装配置Flume,并且测试数据的传输.我昨天是要求传送的HDFS上. 文件配置: ~/.bashrc: export FLUME_HOME=/usr/local/flume/apache-flume-1.6.0-bin export FLUME_CONF_DIR=$FLUME_HOME/conf PA…

原文地址:http://blogs.msdn.com/b/tess/archive/2006/08/11/695268.aspx "We use Page.Cache to store temporary data, but we have recently discovered that it causes high memory consumption. The bad thing is that the memory never goes down even though the cach…

https://stablekernel.com/view-controller-in-ios-6/ Some of you may have noticed that your view controller in iOS 6 no longer gets sent to viewWillUnload or viewDidUnload. That’s because they don’t automatically unload their views anymore. Your first…

Lesson: Overview of the JMX Technology (The Java™ Tutorials > Java Management Extensions (JMX)) https://docs.oracle.com/javase/tutorial/jmx/overview/index.html Lesson: Overview of the JMX Technology The Java Management Extensions (JMX) technology is…

Objective -C Memory Management  内存管理  第一部分 Memory management is part of a more general problem in programming called resource management. 内存管理是资源管理的一部分. Every computer system has finite resources for your program to use. These include memory, open fi…

Basic Memory Structures The basic memory structures associated with Oracle Database include: System global area (SGA) The SGA is a group of shared memory structures, known as SGA components, that contain data and control information for one Oracle Da…

http://dev.mysql.com/doc/refman/5.6/en/memory-use.html The following list indicates some of the ways that the mysqld server uses memory. Where applicable, the name of the system variable relevant to the memory use is given: All threads share the MyIS…

不多说,直接上干货! Flume Sources官网剖析(博主推荐) 一切来源于flume官网 http://flume.apache.org/FlumeUserGuide.html Flume Channels Memory Channel JDBC Channel Kafka Channel File Channel Spillable Memory Channel Pseudo Transaction Channel Custom Channel Memory Channel JDBC C…

Symptom You have questions related to the SAP HANA memory. You experience a high memory utilization or out of memory dumps. Environment SAP HANA Cause 1. Which indications exist for SAP HANA memory problems?2. How can I collect information about the…