{
ZLogConfig zc = ZLogManager.instance().config();
zc.set("base_dir", argv[1]);
ZLog log = ZLogManager.instance().get(argv[2]);
SegmentInfo[] segments = log.segments();
long total = 0;
for (SegmentInfo seg : segments) {
int count = log.countMsg(seg.start(), seg.offset() - seg.start());
System.out.println(String.format("%020d : %d", seg.start(), count));