StringBuffer aggregationKeyBuffer = new StringBuffer(aggregationKey);
List<Path> inputPaths = GenMapRedUtils.getInputPathsForPartialScan(parseInfo, aggregationKeyBuffer);
aggregationKey = aggregationKeyBuffer.toString();
// scan work
PartialScanWork scanWork = new PartialScanWork(inputPaths);
scanWork.setMapperCannotSpanPartns(true);
scanWork.setAggKey(aggregationKey);
// stats work
statsWork.setPartialScanAnalyzeCommand(true);
// partial scan task