| keep total_amount, trip_distance, cost_per_mile 如果我们使用之前的 runtime fields 来实现,也就是这样的: GET nyc_taxis/_search?filter_path=**.hits { "_source": false, "runtime_mappings": { "cost_per_mile": { "type": "double", "script": { "source": "emit(doc['total_amount'...
"runtime_mappings": { "source.ip": { "type": "ip", "script": """ String sourceip=grok('%{IPORHOST:sourceip} .*').extract(doc[ "event.original" ].value)?.sourceip; if (sourceip != null) emit(sourceip); """ } }, "query": { "range": { "@timestamp": { "gte": "...
"runtime_mappings": { // 运行时映射 "weight": { // 字段 "type": "long", // 类型 "script": "emit(doc['is_publish'].value ? 1 : 0)" // 脚本 } } } 脚本字段可能会对性能产生一定的影响,具体取决于您的数据量和查询复杂性。在大规模数据集上使用脚本字段时,请确保评估和测试性能。 da...
"runtime_mappings": { "grade.corrected": { "type": "double", "script": { "source": "emit(Math.min(100, doc['grade'].value * params.correction))", "params": { "correction": 1.2 } } } }, "aggs": { "avg_corrected_grade": { "avg": { "field": "grade.corrected" } } }...
Enhance runtime field 当业务中忘了定义某些字段,或者早期定义的字段类型或类型格式不符合当下业务场景时,可通过新增运行时字段来修正;如 我们希望对商品检索结果按照所属分类进行聚合,但不幸的是存放商品的字段是一个包含多个品类的text字符串,很显然这个字段是不能进行聚合操作的,我们要做的是在runtime_mappings中定...
GET /my-index-000001/_search?size=0{"runtime_mappings": {"message.length": {"type": "long","script": "emit(doc['message.keyword'].value.length())"}},"aggs": {"message_length": {"histogram": {"interval": 10,"field": "message.length"}}} 7...
size=0{"runtime_mappings": {"grade.corrected": {"type": "double","script": {"source": "emit(Math.min(100, doc['grade'].value * params.correction))","params": {"correction": 1.2}}},"aggs": {"avg_corrected_grade": {"avg": {"field": "grade.corrected"}}} 2...
如果需要对布尔值进行转换,可以使用 "运行时"脚本来处理 GET myindex-2_03/_search { "fields": [ { "field": "weight" } ], "runtime_mappings": { "weight": { "type": "long", "script": "emit(doc['is_published'].value?1:0)" } } } #返回结果如下 { "took" : 1, "timed_out...
Math.max(1, Math.min(4, Runtime.getRuntime().availableProcessors() / 2))如果是机械磁盘，可以考虑设置为 1：index.merge.scheduler.max_thread_count: 1 在我们的案例中使用 SSD，配置了 6 个合并线程。优化检索性能 ①关闭不需要字段的 doc values。②尽量使用 keyword 替代一些 long 或者 int 之类，...
GET/test-agg-cars/_search{"runtime_mappings":{"make.length":{"type":"long","script":"emit(doc['make.keyword'].value.length())"}},"size":0,"aggs":{"make_length":{"histogram":{"interval":1,"field":"make.length"}}} 结果