cascading

Gradle - Could not find method mavenRepo() for arguments

由 五迷三道 提交于 2019-12-06 19:37:41
问题 I've cloned the Cascading Pattern project, installed Gradle 2.0 - run and the commend gradle eclipse --stacktrace and I get the following - what is the root cause? J-MacBook-Pro:pattern J$ gradle eclipse --stacktrace FAILURE: Build failed with an exception. * Where: Script '/Users/J../Documents/.../pattern/etc/s3Upload.gradle' line: 28 * What went wrong: A problem occurred evaluating script. > Could not find method mavenRepo() for arguments [{name=monochromeroad, url=http://conjars.org/repo/}

CSS

由 社会主义新天地 提交于 2019-12-05 03:48:11
第一节 CSS简介 1.1 CSS概念 CSS :层叠样式表(英文全称：Cascading Style Sheets)是一种用来表现HTML（标准通用标记语言的一个应用）或XML（标准通用标记语言的一个子集）等文件样式的计算机语言。CSS不仅可以静态地修饰网页，还可以配合各种脚本语言动态地对网页各元素进行格式化。 多个样式可以层层覆盖叠加，如果不同的css样式对同一个html标签进行修饰，样式有冲突的,应用优先级高的，不冲突的样式规则共同作用。 CSS发展版本： 1.CSS1.0 1996年12月W3C发布了第一个有关样式的标准CSS1.0。这个版本中，已经包含了的相关font的相关属性、颜色与背景的相关属性、文字的相关属性、box的相关属性等。 2.CSS2.0 1998年5月，CSS2.0正式推出。这个版本推荐的是内容和表现效果分离的方式，并开始使用样式表结构。 3.CSS2.1 2004年2月，CSS2.1正式推出。它在CSS2.0的基础上略微做了改动，删除了许多不被浏览器支持的属性。 4.CSS3 2005年，W3C就着手W3C开始CSS3标准的制定，到目前为止该标准还没有最终定稿。虽然完整的、规范权威的CSS3标准还没有尘埃落定，但是各主流浏览器已经开始支持其中的绝大部分特性。 1.2 CSS作用 修饰美化html网页。 外部样式表可以提高代码复用性从而提高工作效率。

Gradle - Could not find method mavenRepo() for arguments

由 左心房为你撑大大i 提交于 2019-12-05 00:47:14
I've cloned the Cascading Pattern project, installed Gradle 2.0 - run and the commend gradle eclipse --stacktrace and I get the following - what is the root cause? J-MacBook-Pro:pattern J$ gradle eclipse --stacktrace FAILURE: Build failed with an exception. * Where: Script '/Users/J../Documents/.../pattern/etc/s3Upload.gradle' line: 28 * What went wrong: A problem occurred evaluating script. > Could not find method mavenRepo() for arguments [{name=monochromeroad, url=http://conjars.org/repo/}] on repository container. * Try: Run with --info or --debug option to get more log output. * Exception

Write to multiple outputs by key Scalding Hadoop, one MapReduce Job

由 杀马特。学长 韩版系。学妹 提交于 2019-12-05 00:04:03
问题 How can you write to multiple outputs dependent on the key using Scalding(/cascading) in a single Map Reduce Job. I could of course use .filter for all the possible keys, but that is a horrible hack, which will fire up many jobs. 回答1: There is TemplatedTsv in Scalding (from version 0.9.0rc16 and up), exactly same as Cascading TemplateTsv. Tsv(args("input"), ('COUNTRY, 'GDP)) .read .write(TemplatedTsv(args("output"), "%s", 'COUNTRY)) // it will create a directory for each country under "output

JPA: How do I add new Items to a List with a OneToMany annotation

由 微笑、不失礼 提交于 2019-12-04 12:59:53
I have 2 tables. One is called Employee, and the other is called Phones, and an employee can have multiple Phones. Employee Class: @Entity @Table(name = "employee") public class Employee { @Id @Column(name = "id", unique = true, nullable = false) @GeneratedValue(strategy = javax.persistence.GenerationType.IDENTITY) private Integer id; @Column(name = "name", unique = true, nullable = false, length = 25) private String name; @OneToMany(mappedBy="owner", fetch= FetchType.EAGER, orphanRemoval=true, cascade={CascadeType.ALL}) private List<Phone> phones; Phone class: @Entity @Table(name = "phone")

how to prevent hadoop job to fail on corrupted input file

由 眉间皱痕 提交于 2019-12-04 11:10:59
问题 I'm running hadoop job on many input files. But if one of the files is corrupted the whole job is fails. How can I make the job to ignore the corrupted file? maybe write for me some counter/error log but not fail the whole job 回答1: It depends on where your job is failing - if a line is corrupt, and somewhere in your map method an Exception is thrown then you should just be able to wrap the body of your map method with a try / catch and just log the error: protected void map(LongWritable key,

how to prevent hadoop job to fail on corrupted input file

由 梦想的初衷 提交于 2019-12-03 06:55:07
I'm running hadoop job on many input files. But if one of the files is corrupted the whole job is fails. How can I make the job to ignore the corrupted file? maybe write for me some counter/error log but not fail the whole job It depends on where your job is failing - if a line is corrupt, and somewhere in your map method an Exception is thrown then you should just be able to wrap the body of your map method with a try / catch and just log the error: protected void map(LongWritable key, Text value, Context context) { try { // parse value to a long int val = Integer.parseInt(value.toString());

does anyone find Cascading for Hadoop Map Reduce useful?

由 拟墨画扇 提交于 2019-12-03 00:35:10
问题 I've been trying Cascading, but I cannot see any advantage over the classic map reduce approach for writing jobs. Map Reduce jobs gives me more freedom and Cascading seems to be putting a lot of obstacles. Might make a good job for making simple things simple, but complex things.. I find them extremely hard Is there something I'm missing. Is there an obvious advantage of Cascading over the classic approach? In what scenario should I chose cascading over the classic approach? Any one using it

OpenCV haartraining: Mergevec error: Input file does not exist or not readable

由 允我心安 提交于 2019-12-02 18:44:38
问题 Following this tutorial, I've created my positive samples but need to merge them now, using mergevec. I downloaded the mergevec.exe binary file provided and got the two required dlls cxcore100.dll and highgui100.dll . However, when I run it like so: mergevec samples.txt samples.vec it gives me the error: ERROR: Input file <filename> does not exist or not readable. What should I do to fix this? My vec files are fine, because I was able to view them using the opencv_createsamples utility. So I

【Ajax】----你真的会使用XMLHttpRequest吗？

由 人盡茶涼 提交于 2019-12-02 06:46:39
看到标题时，有些同学可能会想：“我已经用 xhr 成功地发过很多个 Ajax 请求了，对它的基本操作已经算挺熟练了。” 我之前的想法和你们一样，直到最近我使用 xhr 时踩了不少坑儿，我才突然发现其实自己并不够了解 xhr ，我知道的只是最最基本的使用。 于是我决定好好地研究一番 xhr 的真面目，可拜读了不少博客后都不甚满意，于是我决定认真阅读一遍W3C的 XMLHttpRequest 标准。看完标准后我如同醍醐灌顶一般，感觉到了从未有过的清澈。这篇文章就是参考W3C的 XMLHttpRequest 标准和结合一些实践验证总结而来的。 Ajax 和 XMLHttpRequest 我们通常将 Ajax 等同于 XMLHttpRequest ，但细究起来它们两个是属于不同维度的2个概念。 以下是我认为对 Ajax 较为准确的解释：（摘自 what is Ajax ） AJAX stands for Asynchronous JavaScript and XML. AJAX is a new technique for creating better, faster, and more interactive web applications with the help of XML, HTML, CSS, and Java Script. AJAX is based on the
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