run server

Running RPC server prompt on my colinux virtual machine: Cannot register service:RPC:Unable to receive; errno = Connection refused, screenshot as follows: The reason is that the Portmap service is not installed and started, so the solution is to

Exception Analysis 1. "cocould only be replicated to 0 nodes, instead of 1" Exception (1) exception description The configuration above is correct and the following steps have been completed: [Root @ localhost hadoop-0.20.0] # bin/hadoop

  Problem Hadoop @ potr134pc26:/usr/local/hadoop/bin $ Rm-R/Usr/local/hadoop-datastore/---- Now there is no HADOOP-DATASTORE folder locallyHadoop @ potr134pc26:/usr/local/hadoop/bin $./hadoop namenode-format10/02/10 16:33:50 info namenode. namenode:

I have come up with this configuration tutorial for a long time. I have been busy with internships and my graduation thesis recently. it never takes time. however, many people need this tutorial. so I decided to take a day out. the php environment

I have come up with this configuration tutorial for a long time. I have been busy with internships and my graduation thesis recently. it never takes time. however, many people need this tutorial. so I decided to take a day out. the php environment

You need to be careful and patient. During the installation process, you will be able to understand. If the installation is incorrect, you will be criticized.In this example, under red hat

You need to be careful and patient. During the installation process, you will be able to understand. If the installation is incorrect, you will be criticized. In this example, under Red Hat

Org. apache. hadoop. ipc. RemoteException: java. io. IOException: Filetmphive-roothive_2013-08-15_13-46-55_630_3316993537720067107-mr-100021emptyFilecouldonlybereplicatedto0nodes, insteadof1atorg. apache. hadoop. hdfs. server. namenode. FSNa...

CutyCapt is a screenshot tool.Official website http://cutycapt.sourceforge.net/My main goal is to save the web page as an image in php, and start installing CutyCapt without much nonsense.Yum install epel-release # Dependency installationYum install

Now that namenode and datanode1 are available, add the node datanode2 first step: Modify the Host Name of the node to be added hadoop @ datanode1 :~ $ Vimetchostnamedatanode2 Step 2: Modify the host file hadoop @ datanode1 :~ $ Vimetchosts192.168.8.4

Use httpkit to replace jetty and httpkitjetty CompojureIsRingThe upper-Layer web development framework. In the project generated by lein new compojure my-app, jetty server is enabled by default and websocket in http-kit is recently used. Therefore,

There are some requirements in daily work. in simple terms, you need to generate images of some content. It is okay to process simple content through PhotoShop, but it is similar to content with tables. it is a waste of time to process it through

Let's look at the status of JavaScript unit testing and the testing tools. 1.JsUnit We are already using it as our Unit test tool. Advantage: Can be called by ant build file; Start the browser to run the test case; Eclipse plug-in support;

Approaching webpack (3)-image processing, In the previous chapter, we learned how to use webpack to pack css and compress js. This article describes how to use webpack to process images. Let's get started. First, place a picture you like in the

Blog Origin : The author of the whim, do collect 4 USB Camera Screen Small experiment, but encountered in the computer can only open at the same time at most 3 such headaches (personal analysis is the problem of the computer), so out of this way, in

What is rpc? What are the popular rpc frameworks in php. Better layout: www. zybuluo. comphpernote76641 what is the rpc framework? answer the first question: what is the RPC framework? In one sentence, RPC is called RemoteProcedureCall. What is

12:25:47, 472 info org. Apache. hadoop. HDFS. server. namenode. namenode: startup_msg: /*************************************** ********************* Startup_msg: Starting namenode Startup_msg: host = Xiaohua-PC/192.168.1.100 Startup_msg: ARGs =

Org. apache. hadoop. IPC. remoteException: Org. apache. hadoop. HDFS. server. namenode. safemodeexception: cannot delete/tmp/hadoop/mapred/system. name node is in safe mode. The ratio of reported blocks 0.7857 has not reached the threshold 0.9990.

Records in the error log: [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql. host' doesn' t exist I posted a post. I only saw it, but no one replied. I can only solve the problem by myself. Can I help myself... You don't have

1. 安装 wkhtmltopdf centos 7版本 安装方法 yum install wkhtmltopdf 如果版本低于7则需要下载安装 下载地址:http://download.csdn.net/detail/liwei1987821/9337289 2. 下载后 : # mv wkhtmltopdf-amd64 wkhtmltopdf # mv wkhtmltopdf /usr/local/bin 需要再安装xvfb ＃ yum install