PerfectHadoop

This project provides a set of Swift classes which enable access to Hadoop servers.

This package builds with Swift Package Manager and is part of the Perfect project. It was written to be stand-alone and so does not require PerfectLib or any other components.

Ensure you have installed and activated the latest Swift 4.0 tool chain.

Release Note

PerfectHadoop supports Hadoop 3.0.0 with a limitation on 2.7.3.

Building

Add this project as a dependency in your Package.swift file.

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.Package(url:"https://github.com/PerfectlySoft/Perfect-Hadoop.git", majorVersion: 3)

Then please add the following line to the beginning part of swift sources: swift import PerfectHadoop

Error Handle - Exception

In case of operation failure, an exception might be thrown out. In most cases of Perfect-Hadoop, the library would probably throw a Exception object. User can catch it and check a tuple (url, header, body) of the failure, as demo below:

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do {
    // some Perfect Hadoop operations, including WebHDFS / MapReduce / YARN, all of them:
    ...
}
catch(Exception.unexpectedResponse(let (url, header, body))) {
    print("Exception: \(url)\n\(header)\n\(body)")
}
catch (let err){
    print("Other Error:\(err)")
}

User Manual