在spark-shell中执行val sqlContext = new org.apache.spark.sql.hive.HiveContext(sc)报错: error: bad symbolic reference. A signature in HiveContext.class refers to term hive 我使用的是CDH5.3.6,这个版本中spark是无法使用HiveContext的,参考: https://community.cloudera.com/t5/Advan…
Learn Perl in about 2 hours 30 minutes By Sam Hughes Perl is a dynamic, dynamically-typed, high-level, scripting (interpreted) language most comparable with PHP and Python. Perl's syntax owes a lot to ancient shell scripting tools, and it is famed fo…
In this article, let us discuss how to write Perl socket programming using the inbuilt socket modules in Perl. Perl socket modules provides an object interface that makes it easier to create and use TCP / UPD sockets. 本文讨论使用Perl内建的socket模块来实现Perl soc…
最早就是写Perl的,后来来到公司转Python,现在又要负责流程了,开始重拾Perl,当然是借鉴别人现有的语法,我再重新组合. 基本语法就不介绍了,参照我之前文章 Perl 模块 use strict; use File::Path; [Perl]Path::File 目录的创建和删除 内置模块,导入之后就可以随时创建和删除目录了,mkpath("LZX"):rmtree("LZX"): use Getopt::Long; perl 中的有关控制参数的…
on Jun 20, 2019 at 11:39 UTC ( #11101620=perlquestion: print w/replies, xml ) Need Help?? jimyokl has asked for the wisdom of the Perl Monks concerning the following question: Reputation: 5 Edit I just started learning Perl for several days.I sow som…
