我已经在我的solr集合中配置了LTR，我可以看到我的功能和模型文件。为了测试，我只保留了两个功能和一个非常基本的模型文件。我已经附加了这两个文件。我可以使用以下查询检索功能：
localhost：8983/solr/waterstest/query？q=：&fl=title，id，description，score，[features store=myWatersFeatureStore efi.boostedTitle=columns efi.boostedDescription=Heater]
上面的工作正常。我能够检索的功能和分数的数据
当我尝试用上传的模型对结果重新排序时，问题就出现了。
localhost：8983/solr/waterstest/query？q=title：columns&rq={！ltr model=myWatersModel reRankDocs=100 efi.boostedTitle=columns efi.boostedDescription=Heater}&fl=id，score

Response

{
  "responseHeader":{
    "zkConnected":true,
    "status":400,
    "QTime":28,
    "params":{
      "q":"title:columns",
      "fl":"id,score",
      "rq":"{!ltr model=myWatersModel reRankDocs=100 efi.boostedTitle=columns efi.boostedDescription=Heater}"}},
  "error":{
    "metadata":[
      "error-class","org.apache.solr.common.SolrException",
      "root-error-class","org.apache.solr.common.SolrException",
      "error-class","org.apache.solr.client.solrj.impl.BaseHttpSolrClient$RemoteSolrException",
      "root-error-class","org.apache.solr.client.solrj.impl.BaseHttpSolrClient$RemoteSolrException"],
    "msg":"Error from server at null: cannot find model myWatersModel",
    "code":400}}

日志中没有任何内容，只有相同的错误

org.apache.solr.client.solrj.impl.BaseHttpSolrClient$RemoteSolrException: Error from server at null: cannot find model myWatersModel
        at org.apache.solr.client.solrj.impl.Http2SolrClient.processErrorsAndResponse(Http2SolrClient.java:742)
        at org.apache.solr.client.solrj.impl.Http2SolrClient.request(Http2SolrClient.java:412)
        at org.apache.solr.client.solrj.impl.Http2SolrClient.request(Http2SolrClient.java:761)
        at org.apache.solr.client.solrj.SolrClient.request(SolrClient.java:1290)
        at org.apache.solr.handler.component.HttpShardHandler.request(HttpShardHandler.java:78)
        at org.apache.solr.handler.component.ShardRequestor.call(ShardRequestor.java:130)
        at org.apache.solr.handler.component.ShardRequestor.call(ShardRequestor.java:41)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
        at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:212)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)

我还可以检索模型存储：
localhost：8983/solr/waterstest/schema/model-store

{
  "responseHeader":{
    "status":0,
    "QTime":1},
  "models":[{
      "name":"myWatersModel",
      "class":"org.apache.solr.ltr.model.LinearModel",
      "store":"myWatersFeatureStore",
      "features":[{
          "name":"isboostedTitle",
          "norm":{"class":"org.apache.solr.ltr.norm.IdentityNormalizer"}},
        {
          "name":"isboostedDescription",
          "norm":{"class":"org.apache.solr.ltr.norm.IdentityNormalizer"}}],
      "params":{"weights":{
          "isboostedTitle":0.4,
          "isboostedDescription":0.2}}}]}

如果特征查询工作，我也能够检索模型，那么为什么我会得到模型空错误。我知道错误处理部分不适合这里，所以有人能帮助我指出这里可能出了什么问题吗？
这就是要素文件的外观

[
  {
    "store" : "myWatersFeatureStore",
    "name" : "isboostedTitle",
    "class" : "org.apache.solr.ltr.feature.SolrFeature",
    "params" : { "q" :"{!field f=title}${boostedTitle}"  }
  },
  {
    "store" : "myWatersFeatureStore",
    "name" : "isboostedDescription",
    "class" : "org.apache.solr.ltr.feature.SolrFeature",
    "params" : { "q" :"{!field f=description}${boostedDescription}" }
  }
]

和相应的模型文件

{
  "store" : "myWatersFeatureStore",
  "name" : "myWatersModel",
  "class" : "org.apache.solr.ltr.model.LinearModel",
  "features" : [
    { "name" : "isboostedTitle" },
    { "name" : "isboostedDescription" }
  ],
  "params" : {
    "weights" : {
      "isboostedTitle" : 0.4,
      "isboostedDescription" : 0.2
    }
  }
}