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weblogic的线程阻塞,严重会引起weblogic挂起现象
Weblogic 线程处理的默认时间为600s,StuckThreadMaxTime:600。在运行一些将长时间的程序时经常会由于请求时间过长,导至超时。报出more than the configured time (StuckThreadMaxTime) of "600" seconds错误。或...
分类:编程语言   时间:2015-01-21 13:19:17    阅读次数:337
Is not configured
Isnot configured 问题描述: Incorrect configuration: namenode addressdfs.namenode.servicerpc-address or dfs.namenode.rpc-address is not configured.     这很可能是 xml 里面书写有问题,例如下面,8020后面多写了 “空格”,这常常也是导致出...
分类:其他好文   时间:2015-01-21 10:20:13    阅读次数:325
使用MapReduce将HDFS数据导入到HBase(一)
package com.bank.service;import java.io.IOException;import org.apache.hadoop.conf.Configuration;import org.apache.hadoop.conf.Configured;import org.ap...
分类:其他好文   时间:2015-01-17 22:01:48    阅读次数:270
Hadoop2.4.1 MapReduce通过Map端shuffle(Combiner)完成数据去重
package com.bank.service;import java.io.IOException;import org.apache.hadoop.conf.Configuration;import org.apache.hadoop.conf.Configured;import org.ap...
分类:其他好文   时间:2015-01-17 06:22:03    阅读次数:307
Nutch 2.x + Hadoop 2.5.2 + Hbase 0.94.26
一开始运行Nutch 2.x 总是报下面这个错误:java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.Counter, but class was expected这个问题足足折腾了2...
分类:其他好文   时间:2015-01-16 20:47:15    阅读次数:1766
Selection in expected linear time O(n)
Selection in expected linear time            The general selection problem appears more difficult than the simple problem of finding a minimum. Yet, surprisingly, the asymptotic running tim...
分类:其他好文   时间:2015-01-15 14:21:23    阅读次数:185
Spring Data JPA Tutorial: CRUD
http://www.petrikainulainen.net/programming/spring-framework/spring-data-jpa-tutorial-part-two-crud/We have now configured the persistence layer of ou...
分类:编程语言   时间:2015-01-14 08:27:28    阅读次数:268
xampp只允许本地访问,禁止远程访问
远程访问phpmyadmin的时候出现错误New XAMPP security concept:Access to the requested object is only available from the local network.This setting can be configured...
分类:其他好文   时间:2015-01-12 20:47:03    阅读次数:606
[Python]json对象转换出错expected string or buffer python
【问题】 今天在使用python中的json转换碰到一个问题: 【代码】 comments.json { "count":"2", "page":"1", "comments":[ { "content":"helloworld", "user":{ "id":"0001", "name":"xiaosi" }, "source...
分类:编程语言   时间:2015-01-12 19:14:41    阅读次数:152
配置好后发现hadoop Datanodes available: 3
共13台服务器,我配置好了,之后发现datanode连接只有3. 然后配置是好的在呢么办呢? hadoop dfsadmin -report查看,结果竟然是 [hadoop@master logs]$ hadoop dfsadmin -report Configured Capacity: 0 (0 KB) Present Capacity: 0 (0 KB) DFS Re...
分类:其他好文   时间:2015-01-11 12:22:28    阅读次数:129
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