ghalliday/HPCC-Platform — comment on commit 1308164f97e19da30728d86abedd56c7784cab39
File: roxie/ccd/ccdserver.cpp line 7380
By ghalliday:

Yes it is - it is preceding the rowsToSort.append() call in line 7383 which will add it at the end of the buffer without this flush call - either failing to reallocate again, or reallocating and using lots of memory.