bluerone88-优快云博客

原创 JavaScript Build Tree Data Structure Using Array

function Tree(name,parent,child){ this.name = name; this.parent = parent || ''; this.children = child || []; this.addNode = function (parent){ this.children = parent; } this.addChild = function (child

2014-05-10 04:03:41 1501

原创 Java Notify And Wait 实例

最近写SEE2014的代码，碰到了多线程访问共享变量的问题。 1. 单击发送button，监听器置sendFlag为true. 2. 另一个线程循环等待sendFlag置true，并发送消息。代码如下，这是GUI中button响应函数的方法： public synchronized void sendButtonActionActionPerformed(ActionEvent

2014-01-28 00:36:12 770

原创 HDFS 拷贝本地文件至HDFS时的异常[INFO fs.FSInputChecker: Found checksum error]处理方法

boolean deleteSource = false; boolean overwrite = true; boolean returnValue = false; Configuration hdfsconf = new Configuration(); hdfsconf.addResource(new Path("/usr/local/hadoop/conf/cor

2013-03-26 20:54:55 1775

原创 Lucene3.6 Example和一些Tips

1 IndexWriterConfig的设置代码如下所示： IndexWriterConfig conf = new IndexWriterConfig(Version.LUCENE_36, new StandardAnalyzer(Version.LUCENE_36)); conf.setOpenMode(IndexWriterConfig.OpenMode.CREATE); IndexW

2012-07-31 22:29:11 998

原创一张图解释链表翻转

附上递归的算法： LinkList ReverseLinkList( pNode PreNode, pNode CurrentNode ) { if(!CurrentNode) /*如果当前节点指针为空，则返回NULL，此种情况只有在*/ return NULL; /*链表头指针为空时才可能执行到*/ if(!CurrentNode->next) /*如果下一节点指针为空，则将

2012-05-16 11:26:25 654

原创 Mac OS ssh-copy-id Command not found 导致无法对目标服务器上传一个公钥的问题解决方案

解决Mac没有ssh-copy-id命令的问题：使用以下命令代替ssh-copy-id: cat ~/.ssh/id_dsa.pub | ssh hadoop@slave "umask 077; mkdir -p .ssh ; cat >> .ssh/authorized_keys" FYI This command will prompt you for the login passw

2012-05-11 20:50:08 4195

原创 Hadoop配置：file could only be replicated to 0 nodes, instead of 1问题解决方法

今天执行bin/hadoop fs -copyFromLocal /Users/hadoop/Weibo/input/FavoriteFile.txt /user/hadoop/FavoriteFile.txt时候碰到了以下问题： file “*********”could only be replicated to 0 nodes, instead of 1 然后check了一下dfsh

2012-05-11 14:49:56 1484