弹性搜索版本：0.90.2
我正在尝试让 custom_score 查询工作，以便它按新近度对文档进行评分，但到目前为止我得到的只是一个
ClassCastException[org.elasticsearch.index.fielddata.ScriptDocValues$Longs cannot be cast to java.lang.Integer]
这个想法是使用具有整数类型时间戳的字段来索引文档，然后在查询中通过当前时间戳参数对其进行比较。为什么索引整数值变长了？
以下是重现的命令：
curl -XPUT 'http://localhost:9200/test_longs_problem/'
curl -XPUT 'http://localhost:9200/test_longs_problem/albums/_mapping' -d '
{
"albums" : {
"properties" : {
"date" : {"type" : "integer", "analyzed" : false}
}
}
}'
curl -XPUT 'http://localhost:9200/test_longs_problem/albums/1' -d '
{
"date" : 1376823903
}'
curl -XGET 'http://localhost:9200/test_longs_problem/albums/_search?pretty' -d '{
"query": {
"custom_score": {
"query": {
"match_all": {}
},
"params": {
"now": 1376823903
},
"script": "_score * 0.2 / (3.16 * pow(10, -9) * abs(now - doc[\"date\"]) + 0.05) + 1.0"
}
}
}'
投掷
{
"error" : "SearchPhaseExecutionException[Failed to execute phase [query_fetch], total failure; shardFailures {[NSdeWzwNSIeLtGA1mtLTyA][test_longs_problem][0]: QueryPhaseExecutionException[[test_longs_problem][0]: query[filtered(custom score (ConstantScore(*:*),function=script[_score * 0.2 / (3.16 * pow(10, -9) * abs(now - doc[\"date\"]) + 0.05) + 1.0], params [{_source=org.elasticsearch.search.lookup.SourceLookup@7249d155, now=1376823903, _fields=org.elasticsearch.search.lookup.FieldsLookup@4c4e5e11, _doc=org.elasticsearch.search.lookup.DocLookup@2d01d53a, doc=org.elasticsearch.search.lookup.DocLookup@2d01d53a, _score=1.0}]))->cache(_type:albums)],from[0],size[10]: Query Failed [Failed to execute main query]]; nested: CompileException[[Error: uncomparable values <<1376823903>> and <<org.elasticsearch.index.fielddata.ScriptDocValues$Longs@41983ee7>>]\n[Near : {... _score * 0.2 / (3.16 * pow(10, ....}]\n ^\n[Line: 1, Column: 1]]; nested: RuntimeException[uncomparable values <<1376823903>> and <<org.elasticsearch.index.fielddata.ScriptDocValues$Longs@41983ee7>>]; nested: ClassCastException[org.elasticsearch.index.fielddata.ScriptDocValues$Longs cannot be cast to java.lang.Integer]; }]",
"status" : 500
}