[jira] [Created] (SOLR-8106) stats for long field (e.g. _version_) are not accurate

["Timothy Potter (JIRA)" <ji...@apache.org>]

Timothy Potter created SOLR-8106:
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             Summary: stats for long field (e.g. _version_) are not accurate
                 Key: SOLR-8106
                 URL: https://issues.apache.org/jira/browse/SOLR-8106
             Project: Solr
          Issue Type: Bug
            Reporter: Timothy Potter


I have a need to get the min and max values for the _version_ field and the stats component is returning the values in scientific notation, leading to inaccurate values. Here's an example

{code}

http://localhost:8984/solr/perf_shard1_replica1/select?q=*%3A*&sort=_version_+desc&rows=1&fl=_version_&wt=json&indent=true&stats=true&stats.field=_version_

{
  "responseHeader":{
    "status":0,
    "QTime":107,
    "params":{
      "fl":"_version_",
      "sort":"_version_ desc",
      "indent":"true",
      "stats.field":"_version_",
      "stats":"true",
      "q":"*:*",
      "wt":"json",
      "rows":"1"}},
  "response":{"numFound":846744,"start":0,"docs":[
      {
        "_version_":1513129610695409665}]
  },
  "stats":{
    "stats_fields":{
      "_version_":{
        "min":1.51312925387967693E18,
        "max":1.51312961069540966E18,
        "count":846744,
        "missing":0,
        "sum":1.281233266882899E24,
        "sumOfSquares":1.9386717640368418E42,
        "mean":1.51312943095303782E18,
        "stddev":5.0882203289794446E11}}}}
{code}

If you convert the max value from Double to Long you get {{1513129610695409664}} but the actual is {{1513129610695409665}}

As you can see, doing a top 1 (sort desc) gives the correct value as a long.



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