QueryOutputSpec spec = qDef.getSpec().getOutput();
// ensure outputPath is specified. It is optional in grammar because it is not required in Hive mode.
if ( spec == null || spec.getPath() == null )
{
throw new WindowingException("Query doesn't contain an output Path for results");
}
// if tableName is specified; validate it exists
Table oTbl = null;
if ( spec.getHiveTable() != null )
{
oTbl = getHiveTableDetails(tInfo.getHiveCfg(), spec.getHiveTable(), qDef.getInput().getHiveTableSpec());
}
// validate serDeClass
if ( spec.getSerDeClass() == null )
{
if ( oTbl != null && oTbl.getSd().getSerdeInfo().isSetSerializationLib() )
{
spec.setSerDeClass(oTbl.getSd().getSerdeInfo().getSerializationLib());
if ( oTbl.getSd().getSerdeInfo().isSetParameters() )
{
Iterator<Map.Entry<String, String>> props = oTbl.getSd().getSerdeInfo().getParameters().entrySet().iterator();
while(props.hasNext())
{
Map.Entry<String, String> e = props.next();
spec.addSerdeProperty(e.getKey(), e.getValue());
}
}
}
else
{
spec.setSerDeClass(com.sap.hadoop.windowing.Constants.DEFAULT_SERDE_CLASSNAME);
spec.addSerdeProperty(org.apache.hadoop.hive.serde.Constants.FIELD_DELIM, ",");
}
}
try
{
Class.forName(spec.getSerDeClass());
}
catch(Throwable t)
{
throw new WindowingException(sprintf("Unknown SerDe Class %s", spec.getSerDeClass()), t);
}
// validate outputFormat
if ( spec.getOutputFormatClass() == null )
{
if ( oTbl != null )
{
spec.setOutputFormatClass(oTbl.getSd().getOutputFormat());
}
else
{
spec.setOutputFormatClass(Constants.DEFAULT_OUTPUTFORMAT_CLASSNAME);
}
}
try
{
Class.forName(spec.getOutputFormatClass());
}
catch(Throwable t)
{
throw new WindowingException(
sprintf("Unknown OutputFormat Class %s", spec.getOutputFormatClass()), t);
}
// ensure user has not specified a FormatClass
if ( spec.getRecordWriterClass() != null )
{
throw new WindowingException("Illegal Output Spec: RecordWriter class not valid in MR mode");
}
}