CompactionStats majCStats = new CompactionStats();
try {
FileOperations fileFactory = FileOperations.getInstance();
AccumuloConfiguration tableConf = ServerConfiguration.getTableConfiguration(extent.getTableId().toString());
mfw = fileFactory.openWriter(outputFile, fs, conf, tableConf);
Map<String,Set<ByteSequence>> lGroups;
try {
lGroups = LocalityGroupUtil.getLocalityGroups(tableConf);
} catch (LocalityGroupConfigurationError e) {