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  • Kafka 源码

    2021-01-18 09:53:41
    kafka 日志段加载 Kafka 日志段存储 Kafka 日志段切分

    kafka 日志段加载
    Kafka 日志段存储
    Kafka 日志段切分

    展开全文
  • kafka源码分析

    2018-08-15 14:57:30
    kafka源码分析, Introduction kafka-Intro kafka-Unix kafka-Producer kafka-Producer-Scala kafka-SocketServer kafka-LogAppend kafka-ISR kafka-Consumer-init-Scala
  • kafka源码剖析

    2018-12-19 22:57:04
    业界大牛带你看kafka源码,图文解析kafka生产和消费模型,快速深入掌握kafka核心知识
  • 1. Gradle准备 2. Kafka源码准备 3. Scala安装 version: 2.11.8 3. 修改gradle配置文件 修改build.gradle 修改properties 4. 进行build项目

    1. Gradle准备

    2. Kafka源码准备

    3. Scala安装

    version: 2.11.8

    3. 修改gradle配置文件

    修改build.gradle
    image-20200722224044070
    修改properties
    image-20200722224222631

    image-20200722224206015

    4. 进行build项目

    image-20200722224337275

    展开全文
  • Kafka_Kafka源码解析与实战
  • kafka源码理解

    2014-10-22 22:37:59
    kafka源码讲解,适合项目需要的时候使用
  • 1.3 win下Kafka源码环境搭建

    万次阅读 2021-03-20 11:29:38
    本文目的:1 搭建win下kafka调试环境,2,看kafka源码 1 本文环境 win10专业版 JDK 1.8 scala 2.13.4 gradle 3.5 kafka 1.0.0 源码 2 前置软件准备 2.1 JDK 安装省略(如果有本地有多个jdk环境,可以参考这里...

    本文目的:1 搭建win下kafka调试环境,2,看kafka源码

    1 本文环境

    1. win10专业版
    2. JDK 1.8
    3. scala 2.11.11
    4. gradle 4.8.1
    5. kafka 0.11.0.3-rc0 源码

    2 前置软件准备

    2.1 JDK

    安装省略(如果有本地有多个jdk环境,可以参考这里进行配置切换),检查版本如下
    在这里插入图片描述


    2.2 scala

    安装看这里,检查版本如下

    当前社区编译 Kafka 支持 3 个 Scala 版本,分别是 2.11、2.12 和 2.13。2.11 应该很快就会不支持了,而 2.13 又是刚刚推出的版本,因此我推荐你安装 Scala 2.11 版本。

    也可以先确定kafka版本,然后在kafka目录下的gradle.properties中看scalaVersion

    在这里插入图片描述

    2.3 gradle

    安装看这里(注意最好设置好远程私服地址+本地仓库地址),检查版本如下

    建议安装4.x版本的gradle,也可以先确定kafka版本,然后在build.gradle 里找到gradleVersion。即使该版本kafka建议对应的gradle版本

    在这里插入图片描述


    2.4 kafka源码

    1. 直接从官网下载,我下载的是kafka-1.0.0-src.tgz
    2. 从github上下载,然后切出自己想要的分支版本
    //clone 到本地
    >git clone https://github.com/bigData-lab/kafka.git
    //因为我要1.0.0版本的kafka,所以先看tag或远程的版本
    >git tag //查看标签
    >git branch -r //查看远程分支名
    
    >git checkout -b v0.11.0.3-rc0 0.11.0.3-rc0
    
    

    3 win下编译kafka

    3.1 scala版本检查

    首先确保gradle.properties配置文件中的scalaVersion与安装的一致。gradle.properties配置文件的细节如下:

    # Licensed to the Apache Software Foundation (ASF) under one or more
    # contributor license agreements.  See the NOTICE file distributed with
    # this work for additional information regarding copyright ownership.
    # The ASF licenses this file to You under the Apache License, Version 2.0
    # (the "License"); you may not use this file except in compliance with
    # the License.  You may obtain a copy of the License at
    #
    #    http://www.apache.org/licenses/LICENSE-2.0
    #
    # Unless required by applicable law or agreed to in writing, software
    # distributed under the License is distributed on an "AS IS" BASIS,
    # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    # See the License for the specific language governing permissions and
    # limitations under the License.
    
    group=org.apache.kafka
    # NOTE: When you change this version number, you should also make sure to update
    # the version numbers in tests/kafkatest/__init__.py and kafka-merge-pr.py.
    version=1.0.0
    scalaVersion=2.11.11
    task=build
    org.gradle.jvmargs=-XX:MaxPermSize=512m -Xmx1024m -Xss2m
    

    3.2 构建idea工程

    在kafka的目录下执行

    Gradlew是包装器,自动下载包装器里定义好的gradle 版本,保证编译环境统一,gradle 是用本地的gradle版本。

    // 1.因为我本地已经配置好了kafka所需的各种环境,所以直接gradle idea
    // 2. 我之前已经gradle idea过了,中间会有很多下载耗时较长(分钟级别)。下图展示仅仅是为了演示步骤
    >gradle idea
    

    如下图
    在这里插入图片描述


    4 配置Kafka源码环境

    前面几个步骤执行完成后就可以很舒适的阅读Kafka的源码,但是如果需要启动Kafka的服务还需要一些额外的步骤。

    4.1 导入idea

    1. 安装scala插件(之前已经安装了scala,所以下图是update)
      在这里插入图片描述

    2. 配置gradle

    在这里插入图片描述

    1. 导入编译后的kafka
      在这里插入图片描述

    2. 配置日志
      将config目录下的log4j.properties文件拷贝到core/src/main/scala目录下,这样可以让Kafka在运行时能够输出日志信息,可以参考下图:
      在这里插入图片描述
      修改修改log4j.properties,增加kafka日志路径kafka.logs.dir

    kafka.logs.dir=D:\\idea-workspace\\github\\kafka\\logs
    
    1. 配置server.properties文件
    # Licensed to the Apache Software Foundation (ASF) under one or more
    # contributor license agreements.  See the NOTICE file distributed with
    # this work for additional information regarding copyright ownership.
    # The ASF licenses this file to You under the Apache License, Version 2.0
    # (the "License"); you may not use this file except in compliance with
    # the License.  You may obtain a copy of the License at
    #
    #    http://www.apache.org/licenses/LICENSE-2.0
    #
    # Unless required by applicable law or agreed to in writing, software
    # distributed under the License is distributed on an "AS IS" BASIS,
    # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    # See the License for the specific language governing permissions and
    # limitations under the License.
    
    # see kafka.server.KafkaConfig for additional details and defaults
    
    ############################# Server Basics #############################
    
    # The id of the broker. This must be set to a unique integer for each broker.
    broker.id=0
    
    ############################# Socket Server Settings #############################
    
    # The address the socket server listens on. It will get the value returned from 
    # java.net.InetAddress.getCanonicalHostName() if not configured.
    #   FORMAT:
    #     listeners = listener_name://host_name:port
    #   EXAMPLE:
    #     listeners = PLAINTEXT://your.host.name:9092
    #listeners=PLAINTEXT://:9092
    
    # Hostname and port the broker will advertise to producers and consumers. If not set, 
    # it uses the value for "listeners" if configured.  Otherwise, it will use the value
    # returned from java.net.InetAddress.getCanonicalHostName().
    #advertised.listeners=PLAINTEXT://your.host.name:9092
    
    # Maps listener names to security protocols, the default is for them to be the same. See the config documentation for more details
    #listener.security.protocol.map=PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL
    
    # The number of threads that the server uses for receiving requests from the network and sending responses to the network
    num.network.threads=3
    
    # The number of threads that the server uses for processing requests, which may include disk I/O
    num.io.threads=8
    
    # The send buffer (SO_SNDBUF) used by the socket server
    socket.send.buffer.bytes=102400
    
    # The receive buffer (SO_RCVBUF) used by the socket server
    socket.receive.buffer.bytes=102400
    
    # The maximum size of a request that the socket server will accept (protection against OOM)
    socket.request.max.bytes=104857600
    
    
    ############################# Log Basics #############################
    
    # A comma seperated list of directories under which to store log files
    log.dirs=D:\\idea-workspace\\github\\kafka\\logs\\kafka-logs
    
    # The default number of log partitions per topic. More partitions allow greater
    # parallelism for consumption, but this will also result in more files across
    # the brokers.
    num.partitions=1
    
    # The number of threads per data directory to be used for log recovery at startup and flushing at shutdown.
    # This value is recommended to be increased for installations with data dirs located in RAID array.
    num.recovery.threads.per.data.dir=1
    
    ############################# Internal Topic Settings  #############################
    # The replication factor for the group metadata internal topics "__consumer_offsets" and "__transaction_state"
    # For anything other than development testing, a value greater than 1 is recommended for to ensure availability such as 3.
    offsets.topic.replication.factor=1
    transaction.state.log.replication.factor=1
    transaction.state.log.min.isr=1
    
    ############################# Log Flush Policy #############################
    
    # Messages are immediately written to the filesystem but by default we only fsync() to sync
    # the OS cache lazily. The following configurations control the flush of data to disk.
    # There are a few important trade-offs here:
    #    1. Durability: Unflushed data may be lost if you are not using replication.
    #    2. Latency: Very large flush intervals may lead to latency spikes when the flush does occur as there will be a lot of data to flush.
    #    3. Throughput: The flush is generally the most expensive operation, and a small flush interval may lead to exceessive seeks.
    # The settings below allow one to configure the flush policy to flush data after a period of time or
    # every N messages (or both). This can be done globally and overridden on a per-topic basis.
    
    # The number of messages to accept before forcing a flush of data to disk
    #log.flush.interval.messages=10000
    
    # The maximum amount of time a message can sit in a log before we force a flush
    #log.flush.interval.ms=1000
    
    ############################# Log Retention Policy #############################
    
    # The following configurations control the disposal of log segments. The policy can
    # be set to delete segments after a period of time, or after a given size has accumulated.
    # A segment will be deleted whenever *either* of these criteria are met. Deletion always happens
    # from the end of the log.
    
    # The minimum age of a log file to be eligible for deletion due to age
    log.retention.hours=168
    
    # A size-based retention policy for logs. Segments are pruned from the log unless the remaining
    # segments drop below log.retention.bytes. Functions independently of log.retention.hours.
    #log.retention.bytes=1073741824
    
    # The maximum size of a log segment file. When this size is reached a new log segment will be created.
    log.segment.bytes=1073741824
    
    # The interval at which log segments are checked to see if they can be deleted according
    # to the retention policies
    log.retention.check.interval.ms=300000
    
    ############################# Zookeeper #############################
    
    # Zookeeper connection string (see zookeeper docs for details).
    # This is a comma separated host:port pairs, each corresponding to a zk
    # server. e.g. "127.0.0.1:3000,127.0.0.1:3001,127.0.0.1:3002".
    # You can also append an optional chroot string to the urls to specify the
    # root directory for all kafka znodes.
    zookeeper.connect=localhost:2181
    
    # Timeout in ms for connecting to zookeeper
    zookeeper.connection.timeout.ms=6000
    
    
    ############################# Group Coordinator Settings #############################
    
    # The following configuration specifies the time, in milliseconds, that the GroupCoordinator will delay the initial consumer rebalance.
    # The rebalance will be further delayed by the value of group.initial.rebalance.delay.ms as new members join the group, up to a maximum of max.poll.interval.ms.
    # The default value for this is 3 seconds.
    # We override this to 0 here as it makes for a better out-of-the-box experience for development and testing.
    # However, in production environments the default value of 3 seconds is more suitable as this will help to avoid unnecessary, and potentially expensive, rebalances during application startup.
    group.initial.rebalance.delay.ms=0
    
    
    # 是否允许topic被删除,设置为true则topic可以被删除,
    # 开启这个功能方便Kafka在运行一段时间之后,能够删除一些不需要的临时topic
    delete.topic.enable=true
    # 禁用自动创建topic的功能
    auto.create.topics.enable=false
    

    漫长的构建过程

    在这里插入图片描述

    1. 配置kafka启动参数

    这里配置Main class为kafka.Kafka,并制定启动时所需要的配置文件地址,即:config/server.properties。配置JMX_PORT是为了方便搜集Kafka自身的Metrics数据

    在这里插入图片描述

    在这里插入图片描述


    5 Zookeeper的安装、配置及启动

    Kafka需要使用Zookeeper来管理元数据,比如记录topic、partitions(分区)以及replica(副本)的分配信息。

    所以这里的Zookeeper的安装也以极简为主(详细安装见这里),即采用单机配置。Zookeeper下载地址为:http://zookeeper.apache.org/releases.html,下载之后解压,然后将conf/zoo_sample.cfg重命名为zoo.cfg,其中$ZOOKEEPER_HOME指的是ZooKeeper的根目录。

    修改$ZOOKEEPER_HOME/conf/zoo.cfg配置,示例配置如下(其余配置可以不做修改):

    # The number of milliseconds of each tick
    tickTime=2000
    # The number of ticks that the initial 
    # synchronization phase can take
    initLimit=10
    # The number of ticks that can pass between 
    # sending a request and getting an acknowledgement
    syncLimit=5
    # the directory where the snapshot is stored.
    # do not use /tmp for storage, /tmp here is just 
    # example sakes.
    dataDir=D:\\ProgramFiles\\zookeeper-3.4.12\\data
    dataLogDir=D:\\ProgramFiles\\zookeeper-3.4.12\\logs
    # the port at which the clients will connect
    clientPort=2181
    # the maximum number of client connections.
    # increase this if you need to handle more clients
    #maxClientCnxns=60
    #
    # Be sure to read the maintenance section of the 
    # administrator guide before turning on autopurge.
    #
    # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
    #
    # The number of snapshots to retain in dataDir
    #autopurge.snapRetainCount=3
    # Purge task interval in hours
    # Set to "0" to disable auto purge feature
    #autopurge.purgeInterval=1
    

    简要介绍 zoo.cfg 文件

    • tickTime:默认3000ms,作一种基本单元,用它的倍数来表示系统内部的时间间隔配置,比如
    • 2*tickTime 是客户端会话的超时时间
    • 1*tickTime 是客户端 zk 服器端的心跳时
    • dataDir:无默认配置,必配置;用于配置储快照文件的目录,如果没有配置 dataLogDir,那么事务日志也会储在目录
    • clientPort:zk 的运行端口,默认是 2181
      启动
    Windows:直接双击 zkServer.cmd
    Linux: zkServer.sh start
    

    在这里插入图片描述

    如果zk不是默认的,需要修改 kafka的config/server.poroperties 文件的zookeeper.connect属性


    最后kafka启动成功

    在这里插入图片描述


    6 使用kafka

    1. 启动zk
    2. 从idea中启动kafka.scala (相当kafka的server)
    3. 创建topic
    --create -topic waterWang-test --zookeeper localhost:2181 --partitions 2 --replication-factor 1
    

    如下图填写配置
    在这里插入图片描述
    创建topic成功
    在这里插入图片描述

    展开全文
  • kafka源码
  • kafka 技术内幕 图文详解Kafka源码设计与实现 kafka 源码
  • kafka源码思维导图

    2020-10-30 16:57:21
    kafka源码思维导图 kafka源码全景图 从功能上讲,Kafka 源码分为四大模块。 服务器端源码: 实现 Kafka 架构和各类优秀特性的基础。 Java 客户端源码: 定义了与 Broker 端的交互机制,以及通用的 Broker 端组件...

    kafka源码思维导图

    kafka源码全景图

    kafka源码全景图
    从功能上讲,Kafka 源码分为四大模块。

    • 服务器端源码:
      实现 Kafka 架构和各类优秀特性的基础。
    • Java 客户端源码:
      定义了与 Broker 端的交互机制,以及通用的 Broker 端组件支撑代码。
    • Connect 源码:
      用于实现 Kafka 与外部系统的高性能数据传输。
    • Streams 源码:
      用于实现实时的流处理功能。

    kafka服务端源码思维导图

    服务端源码的思维导图如下:
    在这里插入图片描述

    展开全文
  • Kafka技术内幕:图文详解Kafka源码设计与实现;
  • Apache Kafka源码剖析试读文章, kafka 开发的好文章
  • Kafka源码解析及实战

    2018-09-30 17:26:51
    大数据技术丛书《 Kafka源码解析与实战》
  • kafkaKafka 源码解析:Group 协调管理机制.pdf
  • kafka源码解析新手版本

    热门讨论 2016-04-11 20:01:32
    kafka源码解析,适合新手,免积分下载
  • Kafka技术内幕:图文详解Kafka源码设计与实现 PDF 下载 Kafka技术内幕:图文详解Kafka源码设计与实现 PDF 下载
  • kafka-0.10.0.1-src 通过IntelliJ IDEA编译过的kafka源码
  • Kafka技术内幕:图文详解Kafka源码设计与实现 有书签 有源码
  • kafka源码阅读

    2020-03-24 15:59:21
    1.kafka源码-broker的基础模块serversocket
  • kafka源码之kafkaserver的启动

    千次阅读 2016-07-27 10:11:36
    kafka 0.9.0源码 kafka源码分析 kafka server启动分析
  • 图灵书籍包括Kafka技术内幕:图文详解Kafka源码设计与实现.pdf+源码
  • Kafka源码阅读

    2021-03-04 11:10:10
    一、源码编译 官网下载源码,17年出版的书中源码使用的... 配置kafka源码中的maven地址,改为: maven { url'http://maven.aliyun.com/nexus/content/groups/public/'} maven { url'http://maven.aliyun...
  • kafka源码IDEA阅读环境

    2020-04-25 20:08:46
    kafka源码阅读环境 kafka源码导入idea
  • apache kafka技术内幕 和 apacke kafka源码分析2本PDF 电子书 网盘下载
  • Kafka源码分析

    2017-11-12 20:30:59
    历经了大概一个多月的时间,参考了徐郡明老师的Apache Kafka源码剖析,把源码梳理了一遍,放到了github上,后续的会整理成系列博客,希望各位能多多指教。 ...

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