Example usage for org.apache.hadoop.hdfs.server.protocol BlocksWithLocations getBlocks

Introduction

In this page you can find the example usage for org.apache.hadoop.hdfs.server.protocol BlocksWithLocations getBlocks.

Prototype

public BlockWithLocations[] getBlocks() 

Source Link

Document

getter

Usage

From source file:com.sun.grid.herd.HerdLoadSensor.java

License:Open Source License

public void doMeasurement() {
    try {/*www  .j a  v a 2 s.  c  o m*/
        rackName = node.getNetworkLocation();

        BlocksWithLocations blocks = namenode.getBlocks(node, Long.MAX_VALUE);

        List<Long> blockIds = new ArrayList<Long>(100);

        for (BlocksWithLocations.BlockWithLocations block : blocks.getBlocks()) {
            blockIds.add(block.getBlock().getBlockId());
        }

        blockStrings = buildBlockStrings(blockIds);

        log.fine("Rack is " + rackName);
        log.fine("Blocks are: " + blockStrings);
    } catch (IOException e) {
        log.warning("load sensor threw I/O exception while communicating with namenode: " + e.getMessage());
    }
}

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