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Posted to user@storm.apache.org by jinhong lu <lu...@gmail.com> on 2016/01/11 09:03:30 UTC

Not enough data to calculate spout lag

Hi, all

    I found log  "Metrics Tick: Not enough data to calculate spout lag.” in my topo log and then the topo became very slow. I check the source:

  if (_partitions != null && _partitions.size() == _partitionToOffset.size()) {
……}else {
   LOG.info("Metrics Tick: Not enough data to calculate spout lag.");
}

But I have no idea what situation will cause  _partitions != null or _partitions.size() == _partitionToOffset.size().

Any situation will cause this warn, thanks ?


BR//lujinhong