int numConfigs = in.readInt();
for (int i = 0; i < numConfigs; i++) {
ImmutableBytesWritable key = new ImmutableBytesWritable();
ImmutableBytesWritable value = new ImmutableBytesWritable();
key.readFields(in);
value.readFields(in);
configuration.put(
Bytes.toString(key.get(), key.getOffset(), key.getLength()),
Bytes.toString(value.get(), value.getOffset(), value.getLength()));
}
}