pig throw

In general, we use the try/catch/finally statement block to catch exceptions, as we say here. What is the difference between using throw and throw ex when throwing an exception? Assume that several methods are called as follows: → Call the Method1 method in the main method, Try/catch catch exception→ Call the Method2 method in the Method1 method, Try/catch catch exception→ Intentionally throwing exceptions

Java Exception Handling Mechanism throw throws custom business logic exception throws continue to throw catch capture will automatically continue to throw the call method, throwthrows Package com. swift; public class Exception_TestC {public static void main (String [] args) {/** 5th question: one class is ClassA and one class is ClassB, there is a method B in Cla

This article is the last in the Pig System Analysis series, which mainly discusses how to extend the pig function, not only to introduce the UDFs extension mechanism provided by pig itself, but also to explore the possibility of pig extension from the architecture. Supplemental Note: A few days ago colleagues found Tw

PackageCom.swift; Public classEXCEPTION_TESTC { Public Static voidMain (string[] args) {/** Question 5th: There is a class ClassA, there is a class of CLASSB, there is a method B in ClassB, this method throws an exception, in the ClassA class there is a * method A, call B in this method, and then throw an exception. In a client that has a class of TESTC, there is a method for C, please catch the exception information in this method. Java Exception Han

Original address: http://www.linuxidc.com/Linux/2014-03/99055.htmWe use MapReduce for data analysis. When the business is more complex, the use of MapReduce will be a very complex thing, such as you need to do a lot of preprocessing or transformation of the data to be able to adapt to the MapReduce processing mode, on the other hand, write a mapreduce program, Publishing and running jobs will be a time-consuming task.The appearance of pig makes up for

What is a little lazy pig: Small lazy pig business model: through QQ,YY, micro-letter, Wang Wang, micro-Bo and other social tools, in the global promotion of everyone, to create a true forwarding both the money, the registration of the benefit of the multiple benefits model; Small Lazy Pig App Money method Detailed: Small knitting here for you to introduce

The pig script does not need a suffix name to runpig脚本名为tempfile，无后缀名用pig -f tempfile 可直接运行另外，pig tempfile也可以直接运行This allows you to directly invoke the contents of the pig script in a python temporary fileA way for Python to invoke the pig script将

The version used here is the pig-0.12.0-cdh5.1.2 of the cdh release. Click here 1. Pig introduction: Pig is a project donated by Yahoo to Apache. It is an SQL-like language and an advanced query language built on mapreduce, compile some operations into map and reduce of the mapreduce model, and you can define your own functions. This is another clone Google p

Pig C ++ note BASICS (5) expressions and statements, pig BasicsPig C ++ note BASICS (Part 5) Keywords: expressions, statements The content in this chapter is relatively simple, and there is basically no difficulty in understanding it. It is a matter of knowledge. I was not prepared to write it first, but now I have to take notes and write it. After all, there are some gains. So, I just put forward some poin

Pig syntax parsing based on ANTLR and generates a logical execution plan. The logical execution plan basically corresponds to the operation step one by one in the Pig Latin, arranged in dag form. The following code (reference Pig Latin paper at SIGMOD 2008) is an example of an analysis that includes common operations such as load, filter, join, group, foreach, C

Python is really everywhere in the country.Pig 0.9 after python as an embedded voice, using the Jython interpreter to use the python2.5 feature, this interface is the topmost org.apache.pig.scripting.PigFirst the Python script translates some pig latin. Then pass the variable defined in Python to it and run it last.1) Pig.compile or compilefromfile to pre-compile the code2) The Bind method binds a variable in the control flow to a variable in the

Fly pig ticket To change the way to sign: Lower right Corner "my"-My order-find the order that needs to be signed, click Change, submit the application according to the page prompts; --The date that the inquiry needs to be rescheduled/signed is displayed, and some words are selected for submission; -If there is a rescheduling fee to pay, please follow the page prompts the rescheduling fee to pay, after payment waiting for the seller to deal with it

The vision of the pig The pig ran into the large house courtyard Mishi, the horse circle next to the kitchen, it stroll around. Garbage in the arch food, horse dung rest, inevitably sewage toppings like rain. It had been a round of home, and it was the same. Met the shepherd, the Shepherd accosted: "This time you can open your eyes, old pig." It is said that ri

Node. js for front-end pig and Node. js for pigFront-end pig flying traditional front-end pig most of the work is the page layout, rendering and animation effects, playing with is always a web shell, because there is no background support, this always makes front-end pig feel a little uncomfortable. The emergence of No

Pull down the ViewPager of a pig pod and view pager of a pig pod There is a ViewPager layout in the application details page of pods. A view that can be expanded up or down is added to the layout header to display the application data. Basically, the idea is to use ViewDragHelper to drag to control the layout of the view in the header. When the TopView is visible, the gesture event is intercepted by the dra

Explain Explain is a pig-provided debugging tool that uses explain to output pig lation execution plans. It is worth mentioning that explain supports the-DOT option to output the execution plan in DOT format (dot is a graphical description language, refer to http://zh.wikipedia.org/zh/DOT%E8%AF%AD%E8%A8%80) Code implementation detailed in Org.apache.pig.impl.plan.DotPlanDumper, this part of the implementa

;Import Org.apache.pig.EvalFunc;Import Org.apache.pig.data.Tuple;public class UPPER extends Evalfunc@OverridePublic String exec (Tuple input) throws IOException {if (Input==null | | input.size () ==0 | | input.get (0) ==null) {return null;}try {String str = (string) input.get (0);return Str.touppercase ();} catch (Exception e) {throw new IOException ("Convert uppercase Failed", e);}}}After the code is implemented, it needs to be packaged.You do not ne

Pig Data Structure Learning notes (3), pig Data Structure Learning Pig's Data Structure Study Notes (3) Single-chain table of linear table This chapter introduces: In the previous section, we saw the sequence table in the first linear table data structure; When you write the operation code several times by yourself, you will feel a little bit confused. If you want to write the sequence table Insert an alg

Pig Data Structure Learning notes (2), pig Data Structure Learning Pig's Data Structure Learning notes (2) Sequence Table in linear table This section introduces: In the previous chapter, we learned about the concepts related to data structures and algorithms, and learned about the concepts related to data structures. The difference between the logical structure and the physical structure, the characteris

Pig Data Structure Learning notes (1). Pig Data Structure Learning Pig's Data Structure Learning notes (1) Introduction to data structures and algorithms This section introduces: We have learned the basic C language series before. In this series, we will further learn about the data structure and Algorithm, which is very important and difficult to learn. The number of people stuck in this subject is requ