adds ExternalTimeWindow
adds test
Merge branch 'ExternalTimeWindow' into dev
adds TextFileTail
Timestamp +,- takes sec, not ms
wip: writing apache log analyzer
follows Timestamp API change
wip: writing apache log analyzer
wip: writing apache log analyzer
bugfix: emit batch soon after records_in_batch comes
adds tail example
51_apache_log_analysis.py works
adds CopySplit
wip: example/51 supposed to work but not...
bugfix: deepcopy when copying batch (w/o it, iterator proceeds in other path)
bugfix: deepcopy when copying batch (w/o it, iterator proceeds in other path)
example/51 finally works!
removes unnecessary print
adds avail_cores()
adds avail_memory_byte()