public void run() {
// TODO Auto-generated method stub
run = true;
System.out.println("Running a map");
while (run) {
// Figure out how to read input file
// Evaluate it
Map<String, List<String>> input = reader.getKeyValuePairs();
if (input == null) {
map.setStatus(-1);
Message msg = new Message();
msg.setTask(map);
msg.setType('f');
coord.conn.sendMessage(msg);
return;
}
OutputCollector<String, String> collect = new OutputCollector<String, String>();
Set<String> keySet = input.keySet();
for (String key : keySet) {
List<String> values = input.get(key);
for (String value : values) {
map.getJob().map(key, value, collect);
}
}
List<Pair> results = collect.getResults();
int length = results.size();
FileOutputStream out;
try {
System.out.println("Trying to Write to File");
out = new FileOutputStream(new File(map.getOutput().get(0)));
BufferedWriter dw = new BufferedWriter(new OutputStreamWriter(out));
for (Pair p : results) {
dw.append(p.toString());
dw.newLine();
}
dw.newLine();
dw.flush();
dw.close();
out.close();
coord.dataNode.addFileToDFS(map.getOutput().get(0), coord.conn.port, false);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
map.setStatus(-1);
Message msg = new Message();
msg.setTask(map);
msg.setType('f');
coord.conn.sendMessage(msg);
return;
}
map.setStatus(1);
Message msg = new Message();
msg.setTask(map);
msg.setType('f');
coord.conn.sendMessage(msg);
break;
}
}
/**
* Test whether the pair returns the correct string relating to the values of its first and second
* values.
*/
@Test
public void testString() {
Pair<Double> testPair = new Pair<Double>(testFirst, testSecond);
assertEquals(testString, testPair.toString());
}