Nnsetinputformat map reduce pdf files

Typically both the input and the output of the job are stored in a file system. Sasreduce an implementation of mapreduce in base sas. When the file format is readable by the cluster operating system, we need to remove records that our mapreduce program will not know how to digest. Compress pdf online reduce pdf files size with pdf compressor.

The core idea behind mapreduce is mapping your data set. So here we save as utf16 on the desktop, copy that file to the cluster, and then use the iconv1utility to convert the file from utf16 to utf8. Users specify a map function that processes a keyvaluepairtogeneratea. I would suggest to use pddocument object as your value to map, and load the whole content of pdf into pddocument in nextkeyvalue of wholefilerecordreader custom reader. Map is a userdefined function, which takes a series of keyvalue pairs and processes each one of them to generate zero or more keyvalue. Pdf files reducing size with adobe acrobat pro clallam county. Abstract mapreduce is a programming model and an associated implementation for processing and generating large data sets. Reading pdfs is not that difficult, you need to extend the class fileinputformat as well as the recordreader.

Here we have a record reader that translates each record in an input file and sends the parsed data to the mapper in the form of keyvalue pairs. A very brief introduction to mapreduce stanford hci group. If you have your own custom inputformat wholefileinputformat. To facilitate the parallel processing of raw files, similar to that of mapreduce or hadoop, the sasreduce framework. Mapreduce is a software framework for processing large1 data sets in a distributed fashion over a several machines. Data files are split into blocks and transparently. Mapreduce was designed to be a batchoriented approach to data processing due to large file sizes the framework. The core idea behind mapreduce is mapping your data set into a collection of pairs, and then reducing over all pairs with the same key. Easily use foxits free online pdf compressor to reduce the size of your pdfs. How to reduce pdf file size without losing any quality. Mapreduces use of input files and lack of schema support prevents the. Map is a userdefined function, which takes a series of keyvalue pairs and processes each one of them to generate zero or more keyvalue pairs. A mapreduce job usually splits the input dataset into independent chunks which are processed by the map tasks in a completely parallel manner.