/**
* Reduces values for a given key
*
* @param key the Key for the given value being passed in
* @param value an Array to process that corresponds to the given key
* @param context the Context object for the currently executing job
*/
public void map(Object key, TransBinaryMapInputValue value, Context context)
throws IOException, InterruptedException {
TransBinaryInputSplit split = value.getSplit();
ZoneClient zclient = null;
OptimusZone zone1 = null;
OptimusZone zone2 = null;
OptimusZone zone3 = null;
cl = (Counter) context.getCounter("TRANS_READ", "MAPPER_LOCAL_READ");
cr = (Counter) context.getCounter("TRANS_READ", "MAPPER_REMOTE_READ");
co = (Counter) context.getCounter("TRANS_WRITE", "MAPPER_WRITE");
OptimusCatalogProtocol ci = null;
boolean earlybird = split.isEarlybird();
PartitionReader reader = null;
try {
OptimusConfiguration conf = new OptimusConfiguration(split.getConfDir());
zclient = new ZoneClient(conf);
ci = zclient.getCi();
zone1 = ci.openZone(new ZoneID(split.getZid1()));
zone2 = ci.openZone(new ZoneID(split.getZid2()));
zone3 = ci.openZone(new ZoneID(split.getZid3()));
reader = new PartitionReader(conf);
} catch (WrongArgumentException e) {
throw new IOException("Create Client Failure");
} catch (JDOMException e) {
throw new IOException("Create Client Failure");
}
String[] host = split.getLocations();
Host h = UTILS.RandomHost(host, split.getHosts().getHosts());
Object[] data2 = null;
Object[] data1 = null;
DataChunk chunk = new DataChunk(zone3.getSize().getShape(), zone3.getPstep().getShape());
try {
if (split.getZid1() == split.getZid2()
&& Arrays.equals(split.getStart1(), split.getStart2())) {
data1 = this.colocatedRead(split, h, zone1, zone2, zone3);
cl.increment(data1.length);
} else {
OptimusDataProtocol dp = h.getDataProtocol();
int[] start1 = split.getStart1();
int[] cstart1 = split.getCstart();
int[] rstart1 = new int[start1.length];
for (int i = 0; i < start1.length; i++) {
rstart1[i] = start1[i] - cstart1[i];
}
data1 =
(Double[])
dp.readData(
new ArrayID(split.getAid1()),
new PID(split.getPnum1()),
new OptimusShape(split.getPs1()),
new OptimusShape(rstart1),
new OptimusShape(split.getRoff()))
.getData();
data2 =
(Double[]) reader.readData(zone2, split.getAid2(), split.getStart2(), split.getOff());
// data1 = reader.readData(zone1, split.getAid1(), split.getStart1(), split.getOff());
cl.increment(data1.length);
cr.increment(data2.length);
data1 = split.getCal().calcArray(data1, data2);
}
} catch (WrongArgumentException e) {
e.printStackTrace();
throw new IOException("Reading from the second aray failure");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
throw new IOException("Reading from the second aray failure");
}
int[] off = split.getRoff();
int[] rstart = split.getRstart();
TRANSDataIterator itr1 =
new TRANSDataIterator(
new TransDataType(data1[0].getClass()), data1, rstart, split.getRoff());
ZoneID zid = zone3.getId();
ArrayID aid = new ArrayID(split.getAid3());
RID rid = new RID(zone3.getStrategy().getShapes().size() - 2);
Set<DataChunk> chunks = chunk.getAdjacentChunks(split.getRstart(), split.getOff());
for (DataChunk c : chunks) {
int[] cstart = c.getStart();
int[] coff = c.getChunkSize();
int[] nstart = new int[cstart.length];
int[] noff = new int[cstart.length];
int len = 1;
for (int i = 0; i < cstart.length; i++) {
nstart[i] = cstart[i] > rstart[i] ? cstart[i] : rstart[i];
noff[i] = Math.min(cstart[i] + coff[i], rstart[i] + off[i]);
noff[i] -= nstart[i];
len *= noff[i];
}
Object[] tmp = new Object[len];
TRANSDataIterator itr =
new TRANSDataIterator(new TransDataType(data1[0].getClass()), tmp, nstart, noff);
if (!itr.init(itr1.getStart(), itr1.getShape())) {
continue;
}
itr1.init(itr.getStart(), itr.getShape());
while (itr.next() && itr1.next()) {
itr.set(itr1.get());
}
if (earlybird) {
Partition p = new Partition(zid, aid, new PID(c.getChunkNum()), rid);
Host ho = null;
try {
ci.CreatePartition(p);
ho = ci.getReplicateHost(p, rid);
} catch (WrongArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
throw new IOException("Get Replicate host failure");
}
OptimusDataProtocol dp = ho.getDataProtocol();
dp.putPartitionData(p, itr);
co.increment(itr.getSize());
} else {
context.write(new IntWritable(c.getChunkNum()), itr);
}
}
}
private Object[] colocatedRead(
TransBinaryInputSplit split, Host h, OptimusZone zone1, OptimusZone zone2, OptimusZone zone3)
throws Exception {
System.out.println("colocated Read");
OptimusCalculatorProtocol cp = h.getCalculateProtocol();
Partition p1 =
new Partition(
zone1.getId(), new ArrayID(split.getAid1()), new PID(split.getPnum1()), new RID(0));
Partition p2 =
new Partition(
zone2.getId(), new ArrayID(split.getAid1()), new PID(split.getPnum1()), new RID(0));
Partition p3 =
new Partition(zone3.getId(), new ArrayID(split.getAid3()), new PID(0), new RID(0));
int[] start1 = split.getStart1();
int[] start2 = split.getStart2();
int[] cstart1 = split.getCstart();
int[] rstart1 = new int[start1.length];
int[] rstart2 = new int[start1.length];
for (int i = 0; i < start1.length; i++) {
rstart1[i] = start1[i] - cstart1[i];
rstart2[i] = start2[i] - cstart1[i];
}
return cp.JoinArray(
p1,
p2,
new OptimusShape(split.getPs1()),
new OptimusShape(rstart1),
new OptimusShape(split.getRoff()),
split.getCal())
.getData();
}