{"issue":{"created_at":"2011-11-22T23:10:59Z","state":"open","updated_at":"2011-12-03T21:30:40Z","user":{"gravatar_id":"b5228fbbe7c3f6255ccc35899eecc266","id":375265,"url":"https://api.github.com/users/yankov","avatar_url":"https://secure.gravatar.com/avatar/b5228fbbe7c3f6255ccc35899eecc266?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png","login":"yankov"},"comments":3,"body":"As I understand a single mapper should receive a single split with the entire collection.\r\nWhen using big collections (>400k records) for some reason mapper receives only ~300-400k records (I see the value in map input records when job is done). And therefore calculations seem to be wrong.\r\n\r\nShould \"Map input records\" always show the real size of the passed collection?","assignee":null,"id":2324307,"pull_request":{"patch_url":null,"html_url":null,"diff_url":null},"labels":[],"number":22,"title":"Mapper receives only part of the collection. ","html_url":"https://github.com/mongodb/mongo-hadoop/issues/22","closed_at":null,"url":"https://api.github.com/repos/mongodb/mongo-hadoop/issues/22","milestone":null},"action":"created","comment":{"created_at":"2011-12-03T21:30:40Z","updated_at":"2011-12-03T21:30:40Z","user":{"gravatar_id":"68faee7af24390f829c42dd934e27ca5","id":98358,"url":"https://api.github.com/users/bwmcadams","avatar_url":"https://secure.gravatar.com/avatar/68faee7af24390f829c42dd934e27ca5?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png","login":"bwmcadams"},"body":"WRT to heap size and io.sort.mb, were you seeing errors when you hit a ceiling on that?","id":3003163,"url":"https://api.github.com/repos/mongodb/mongo-hadoop/issues/comments/3003163"}}