apache-pig

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Pig Version Mismatch (Hadoop)

Did anyone has met the problem before? This is error log: Protocol org.apache.hadoop.mapred.J开发者_JS百科obSubmissionProtocol version mismatch. (client = 20, server = 21)[详细]

2023-02-04 07:16 分类：问答
How to "update" a column using pig latin

Imagine I have the following table available to me: A: { x: int, y: int, z: int, ...99 other columns... }[详细]

2023-02-03 21:38 分类：问答
Using PIG with Hadoop, how do I regex match parts of text with an unknown number of groups?

I\'m us开发者_开发知识库ing Amazon\'s elastic map reduce. I have log files that look something like this[详细]

2023-02-01 23:15 分类：问答
Get names of field schema from Pig

I\'m working on a JsonStorage for Pig. Everything works fine, but at least I need to get the names of the fields (i.e. crdate, name, positions) from the pig schema.[详细]

2023-01-30 16:46 分类：问答
What are the environment settings in Apache Pig and Hadoop Connection to run tutorial scripts?

I am trying to run the pig tutorial scripts in Ubuntu for two days, however I can not manage to make pig connect to hadoop file system. It is still saying: \" Connecting to hadoop file system at: file[详细]

2023-01-25 02:56 分类：问答
Using Hive with Pig

My hive query has multiple outer joins and takes very long to execute. I was wondering if it would make sense to break it into multiple smaller queries and use pi开发者_C百科g to work the transformati[详细]

2023-01-17 22:18 分类：问答
Call RESTful service in Pig script

I\'m working on a Pig script (my first) that loads a large text file. For each record in that text file, the content of one field needs to be sent off to a RESTful service for processing. Nothing need[详细]

2023-01-17 06:25 分类：问答
Merging multiple files into one within Hadoop

I get multiple small files into my input dir开发者_运维问答ectory which I want to merge into a single file without using the local file system or writing mapreds. Is there a way I could do it using ha[详细]

2023-01-12 13:27 分类：问答
How can I group a large dataset

I have simple text file containing two columns, both integers 1 5 1 12 2 5 2 341 2 12 and so on.. I need to group the dataset by second value,[详细]

2023-01-09 23:11 分类：问答
Regexp matching in pig

Using apache pig and the text hahahah.my brother just didnt do anything wrong. He cheated on a test? n开发者_Go百科o way![详细]

2023-01-07 19:04 分类：问答