@Override
protected void init() {
super.init();
// Reject request if classification is required and response column is float
// Argument a4class = find("classification"); // get UI control
// String p4class = input("classification"); // get value from HTTP requests
// if there is UI control and classification field was passed
final boolean classificationFieldSpecified =
true; // ROLLBACK: a4class!=null ? p4class!=null : /* we are not in UI so expect that
// parameter is specified correctly */ true;
if (!classificationFieldSpecified) { // can happen if a client sends a request which does not
// specify classification parameter
classification = response.isEnum();
Log.warn(
"Classification field is not specified - deriving according to response! The classification field set to "
+ classification);
} else {
if (classification && response.isFloat())
throw new H2OIllegalArgumentException(
find("classification"), "Requested classification on float column!");
if (!classification && response.isEnum())
throw new H2OIllegalArgumentException(
find("classification"), "Requested regression on enum column!");
}
}
public static InputStream openStream(Key k, ProgressMonitor pmon) throws IOException {
H2OHdfsInputStream res = null;
Path p = new Path(k.toString());
try {
res = new H2OHdfsInputStream(p, 0, pmon);
} catch (IOException e) {
try {
Thread.sleep(1000);
} catch (Exception ex) {
}
Log.warn("Error while opening HDFS key " + k.toString() + ", will wait and retry.");
res = new H2OHdfsInputStream(p, 0, pmon);
}
return res;
}