Example usage for org.apache.hadoop.fs BlockLocation BlockLocation

Introduction

In this page you can find the example usage for org.apache.hadoop.fs BlockLocation BlockLocation.

Prototype

public BlockLocation(String[] names, String[] hosts, String[] topologyPaths, long offset, long length) 

Source Link

Document

Constructor with host, name, network topology, offset and length

Usage

From source file:org.apache.hive.common.util.MockFileSystem.java

License:Apache License

private BlockLocation[] getFileBlockLocationsImpl(final FileStatus stat, final long start, final long len,
        final boolean updateStats) throws IOException {
    if (updateStats) {
        statistics.incrementReadOps(1);//  ww w. jav a  2s . c om
    }
    checkAccess();
    List<BlockLocation> result = new ArrayList<BlockLocation>();
    MockFile file = findFile(stat.getPath());
    if (file != null) {
        for (MockBlock block : file.blocks) {
            if (getOverlap(block.offset, block.length, start, len) > 0) {
                String[] topology = new String[block.hosts.length];
                for (int i = 0; i < topology.length; ++i) {
                    topology[i] = "/rack/ " + block.hosts[i];
                }
                result.add(new BlockLocation(block.hosts, block.hosts, topology, block.offset, block.length));
            }
        }
        return result.toArray(new BlockLocation[result.size()]);
    }
    return new BlockLocation[0];
}

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