Got a problem with "size" in kibana

Elastic Stack Kibana
1

I loaded a file with 9177 records into ES 2.4.0 using logstash 2.4.0. When i seen the graph in Kibana 4.6.0 its giving abnormal results like when I mention "size" as 5 its showing the count as 8 (As like in the first pic). When I changed the size to 10 its showing the count as 10. but the actual result is 10.

I tried multi queries which is giving different results.

GET smsc_small/_search
{
  "query": {
    "bool": {
      "must": [
        {"term": {"OA": "DT-AIRCEL"}},
        {"term": {"DA": "918760689889"}}
      ]
    }
  }
}

"hits": {
    "total": 10,
    "max_score": 7.6744456,
    "hits": [
      {
        "_index": "smsc_small",
        "_type": "CDR",
        "

GET smsc_small/_search
{
  "size": 0, 
  "query": {
    "bool": {
      "must": [
        {"term": {"OA": "DT-AIRCEL"}}
      ]
    }
  },
  "aggs": {
    "groupby_numbers": {
      "terms": {
        "field": "DA"
      }
    }
  }
}

"groupby_numbers": {
      "doc_count_error_upper_bound": 10,
      "sum_other_doc_count": 3584,
      "buckets": [
        {
          "key": "918760689889",
          "doc_count": 10
        },
        {
          "key": "917502093169",
          "doc_count": 6
        },

These quiries are looking Ok. But why the graph showing 8????/ Please help

2

Moving this to the Kibana category since this question is about Kibana

3

The size relates to the number of terms (i.e. bars) you want to be shown on the chart, not the scale of the y-axis.

4

@colings86 I know that the size belongs to terms. So if I change the "size" the count should not vary. But its varied. That is the main cause for this post. Please check why its(count in Y-axis) varying while changing the "size"