Example usage for org.apache.mahout.common.iterator.sequencefile SequenceFileDirValueIterator SequenceFileDirValueIterator

Introduction

In this page you can find the example usage for org.apache.mahout.common.iterator.sequencefile SequenceFileDirValueIterator SequenceFileDirValueIterator.

Prototype

public SequenceFileDirValueIterator(Path path, PathType pathType, PathFilter filter,
        Comparator<FileStatus> ordering, boolean reuseKeyValueInstances, Configuration conf)
        throws IOException 

Source Link

Document

Constructor that uses either FileSystem#listStatus(Path) or FileSystem#globStatus(Path) to obtain list of files to iterate over (depending on pathType parameter).

Usage

From source file:org.gpfvic.mahout.cf.taste.hadoop.als.ALS.java

License:Apache License

static Vector readFirstRow(Path dir, Configuration conf) throws IOException {
    Iterator<VectorWritable> iterator = new SequenceFileDirValueIterator<>(dir, PathType.LIST,
            PathFilters.partFilter(), null, true, conf);
    return iterator.hasNext() ? iterator.next().get() : null;
}

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