2018/06/24

  • 使用 ECB 实现 make reservation 用例的详细设计(包含用例简介,顺序图,类图)

简介:

    1. 用户登录
      1.1 注册用户信息(如果没注册)
      1.2 进行登录
    2. 搜索酒店
      2.1 选择地点
      2.2 选择日期
    3. 选择酒店与生成订单
      3.1 选择酒店
      3.2 生成订单并确认
    4. 支付订单
      4.1 调用支付系统支付

顺序图:



类图:


  • 将逻辑设计类图映射到实际项目框架的包图。用树形结构表述实现的包和类

包图:


树形图:



















先看效果: https://renmaiwang.cn/s/jkhfz Hue系列产品将具备高度的个性化定制能力,并且借助内置红、蓝、绿三原色LED的灯泡,能够混合生成1600万种不同色彩的灯光。 整个操作流程完全由安装于iPhone上的应用程序进行管理。 这一创新举措为智能照明控制领域带来了新的启示,国内相关领域的从业者也积极投身于相关研究。 鉴于Hue产品采用WiFi无线连接方式,而国内WiFi网络尚未全面覆盖,本研究选择应用更为普及的蓝牙技术,通过手机蓝牙与单片机进行数据交互,进而产生可调节占空比的PWM信号,以此来控制LED驱动电路,实现LED的调光功能以及DIY调色方案。 本文重点阐述了一种基于手机蓝牙通信的LED灯设计方案,该方案受到飞利浦Hue智能灯泡的启发,但考虑到国内WiFi网络的覆盖限制,故而选用更为通用的蓝牙技术。 以下为相关技术细节的详尽介绍:1. **智能照明控制系统**:智能照明控制系统允许用户借助手机应用程序实现远程控制照明设备,提供个性化的调光及色彩调整功能。 飞利浦Hue作为行业领先者,通过红、蓝、绿三原色LED的混合,能够呈现1600万种颜色,实现了全面的定制化体验。 2. **蓝牙通信技术**:蓝牙技术是一种低成本、短距离的无线传输方案,工作于2.4GHz ISM频段,具备即插即用和强抗干扰能力。 蓝牙协议栈由硬件层和软件层构成,提供通用访问Profile、服务发现应用Profile以及串口Profiles等丰富功能,确保不同设备间的良好互操作性。 3. **脉冲宽度调制调光**:脉冲宽度调制(PWM)是一种高效能的调光方式,通过调节脉冲宽度来控制LED的亮度。 当PWM频率超过200Hz时,人眼无法察觉明显的闪烁现象。 占空比指的...
STARTUP_MSG: classpath = /opt/programs/hadoop-2.7.6/etc/hadoop:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-compress-1.4.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-cli-1.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jettison-1.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/curator-framework-2.7.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/java-xmlbuilder-0.4.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/slf4j-api-1.7.10.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-digester-1.8.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/httpclient-4.2.5.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/api-asn1-api-1.0.0-M20.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/protobuf-java-2.5.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jersey-server-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/mockito-all-1.8.5.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-httpclient-3.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jersey-core-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/xmlenc-0.52.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jackson-mapper-asl-1.9.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jersey-json-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/curator-client-2.7.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/avro-1.7.4.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-net-3.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jackson-xc-1.9.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/log4j-1.2.17.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/gson-2.2.4.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/hamcrest-core-1.3.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-io-2.4.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-configuration-1.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/activation-1.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/api-util-1.0.0-M20.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jets3t-0.9.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/apacheds-i18n-2.0.0-M15.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jetty-util-6.1.26.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-collections-3.2.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/zookeeper-3.4.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jackson-core-asl-1.9.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-beanutils-core-1.8.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jsch-0.1.54.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-math3-3.1.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/hadoop-auth-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/servlet-api-2.5.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-logging-1.1.3.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jsr305-3.0.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-beanutils-1.7.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/xz-1.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jaxb-api-2.2.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jetty-sslengine-6.1.26.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/curator-recipes-2.7.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/snappy-java-1.0.4.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/guava-11.0.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/hadoop-annotations-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/httpcore-4.2.5.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/junit-4.11.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jackson-jaxrs-1.9.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/paranamer-2.3.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/netty-3.6.2.Final.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jsp-api-2.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/asm-3.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/stax-api-1.0-2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/apacheds-kerberos-codec-2.0.0-M15.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-codec-1.4.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/jetty-6.1.26.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/htrace-core-3.1.0-incubating.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/lib/commons-lang-2.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/hadoop-common-2.7.6-tests.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/hadoop-common-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/common/hadoop-nfs-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/xml-apis-1.3.04.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/commons-cli-1.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/netty-all-4.0.23.Final.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/jersey-server-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/jersey-core-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/xmlenc-0.52.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/jackson-mapper-asl-1.9.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/leveldbjni-all-1.8.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/log4j-1.2.17.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/commons-io-2.4.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/jetty-util-6.1.26.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/jackson-core-asl-1.9.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/xercesImpl-2.9.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/servlet-api-2.5.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/commons-logging-1.1.3.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/jsr305-3.0.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/guava-11.0.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/netty-3.6.2.Final.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/asm-3.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/commons-codec-1.4.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/jetty-6.1.26.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/htrace-core-3.1.0-incubating.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/lib/commons-lang-2.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/hadoop-hdfs-nfs-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/hadoop-hdfs-2.7.6-tests.jar:/opt/programs/hadoop-2.7.6/share/hadoop/hdfs/hadoop-hdfs-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/commons-compress-1.4.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/guice-3.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/commons-cli-1.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jettison-1.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/protobuf-java-2.5.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jersey-server-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jersey-core-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jackson-mapper-asl-1.9.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jersey-json-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jackson-xc-1.9.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/leveldbjni-all-1.8.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/guice-servlet-3.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/log4j-1.2.17.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/commons-io-2.4.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/activation-1.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jetty-util-6.1.26.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/commons-collections-3.2.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/zookeeper-3.4.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jersey-guice-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jackson-core-asl-1.9.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jaxb-impl-2.2.3-1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/javax.inject-1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jersey-client-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/servlet-api-2.5.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/commons-logging-1.1.3.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jsr305-3.0.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/xz-1.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jaxb-api-2.2.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/guava-11.0.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/zookeeper-3.4.6-tests.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jackson-jaxrs-1.9.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/netty-3.6.2.Final.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/asm-3.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/stax-api-1.0-2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/aopalliance-1.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/commons-codec-1.4.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/jetty-6.1.26.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/lib/commons-lang-2.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-server-nodemanager-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-server-common-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-server-resourcemanager-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-server-applicationhistoryservice-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-server-tests-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-common-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-client-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-registry-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-server-web-proxy-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-server-sharedcachemanager-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/yarn/hadoop-yarn-api-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/commons-compress-1.4.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/guice-3.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/protobuf-java-2.5.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/jersey-server-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/jersey-core-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/jackson-mapper-asl-1.9.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/avro-1.7.4.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/leveldbjni-all-1.8.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/guice-servlet-3.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/log4j-1.2.17.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/hamcrest-core-1.3.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/commons-io-2.4.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/jersey-guice-1.9.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/jackson-core-asl-1.9.13.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/javax.inject-1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/xz-1.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/snappy-java-1.0.4.1.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/hadoop-annotations-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/junit-4.11.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/paranamer-2.3.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/netty-3.6.2.Final.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/asm-3.2.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/lib/aopalliance-1.0.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.7.6-tests.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/hadoop-mapreduce-client-common-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/hadoop-mapreduce-client-app-2.7.6.jar:/opt/programs/hadoop-2.7.6/share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-2.7.6.jar:/opt/programs/hadoop-2.7.6/contrib/capacity-scheduler/*.jar STARTUP_MSG: build = https://shv@git-wip-us.apache.org/repos/asf/hadoop.git -r 085099c66cf28be31604560c376fa282e69282b8; compiled by 'kshvachk' on 2018-04-18T01:33Z STARTUP_MSG: java = 1.8.0_211 ************************************************************/ 25/10/15 06:06:24 INFO server.JournalNode: registered UNIX signal handlers for [TERM, HUP, INT] 25/10/15 06:06:24 INFO impl.MetricsConfig: loaded properties from hadoop-metrics2.properties 25/10/15 06:06:24 INFO impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s). 25/10/15 06:06:24 INFO impl.MetricsSystemImpl: JournalNode metrics system started 25/10/15 06:06:25 INFO hdfs.DFSUtil: Starting Web-server for journal at: http://0.0.0.0:8480 25/10/15 06:06:25 INFO mortbay.log: Logging to org.slf4j.impl.Log4jLoggerAdapter(org.mortbay.log) via org.mortbay.log.Slf4jLog 25/10/15 06:06:25 INFO server.AuthenticationFilter: Unable to initialize FileSignerSecretProvider, falling back to use random secrets. 25/10/15 06:06:25 INFO http.HttpRequestLog: Http request log for http.requests.journal is not defined 25/10/15 06:06:25 INFO http.HttpServer2: Added global filter 'safety' (class=org.apache.hadoop.http.HttpServer2$QuotingInputFilter) 25/10/15 06:06:25 INFO http.HttpServer2: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context journal 25/10/15 06:06:25 INFO http.HttpServer2: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context static 25/10/15 06:06:25 INFO http.HttpServer2: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context logs 25/10/15 06:06:25 INFO http.HttpServer2: Jetty bound to port 8480 25/10/15 06:06:25 INFO mortbay.log: jetty-6.1.26 25/10/15 06:06:25 INFO mortbay.log: Started HttpServer2$SelectChannelConnectorWithSafeStartup@0.0.0.0:8480 25/10/15 06:06:25 INFO ipc.CallQueueManager: Using callQueue: class java.util.concurrent.LinkedBlockingQueue queueCapacity: 500 25/10/15 06:06:25 INFO ipc.Server: Starting Socket Reader #1 for port 8485 25/10/15 06:06:26 INFO ipc.Server: IPC Server Responder: starting 25/10/15 06:06:26 INFO ipc.Server: IPC Server listener on 8485: starting 怎么解决 没有格式化成功 路径没有错
10-16
在路径无误的情况下,运行 `bin/hdfs journalnode -format -jnDir /opt/programs/hadoop-2.7.6/journal/data/ns` 格式化失败,可从以下几个方面解决: ### Java路径与环境变量问题 若启动日志提示类似 `/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141-3.b16.el6_9.i386/bin/java: 没有那个文件或目录` 错误,表明系统无法找到指定路径下的Java可执行文件。需检查并确保 `JAVA_HOME` 环境变量正确配置,指向有效的Java安装路径。可通过以下命令查看和修改环境变量: ```bash # 查看当前 JAVA_HOME 环境变量 echo $JAVA_HOME # 编辑环境变量配置文件 vi ~/.bashrc 或者 vi /etc/environment # 在文件中添加或修改 JAVA_HOME 配置 export JAVA_HOME=/path/to/your/java export PATH=$PATH:$JAVA_HOME/bin # 使配置生效 source ~/.bashrc 或者 source /etc/environment ``` ### 文件或目录权限问题 当前用户可能没有足够的权限访问 `bin/hdfs` 脚本或指定的 `jnDir` 目录,导致格式化失败。可使用 `ls -l` 命令查看文件和目录的权限,并使用 `chmod` 和 `chown` 命令修改权限和所有者,示例如下: ```bash # 查看文件和目录权限 ls -l /opt/programs/hadoop-2.7.6/bin/hdfs ls -l /opt/programs/hadoop-2.7.6/journal/data/ns # 修改文件和目录权限 chmod +x /opt/programs/hadoop-2.7.6/bin/hdfs chmod -R 755 /opt/programs/hadoop-2.7.6/journal/data/ns # 修改文件和目录所有者 chown -R your_username:your_group /opt/programs/hadoop-2.7.6/journal/data/ns ``` ### 配置文件问题 Hadoop的配置文件(如 `core-site.xml`、`hdfs-site.xml` 等)可能存在错误配置,影响格式化操作。需检查这些配置文件,确保相关配置项正确,例如检查 `dfs.journalnode.edits.dir` 是否与 `-jnDir` 指定的目录一致。 ### 用户权限和环境变量配置差异 不同用户登录系统时,环境变量配置可能不同,这可能导致命令执行失败。若之前按 `/etc/environment` 配置没出问题,但换了新用户登录部署伪分布式时出现问题,需确保新用户的环境变量配置正确,并且有足够的权限执行相关操作。
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