我正在尝试使用solr-cloud，我必须使用学习来对我的项目的模型和功能进行排名。但是我面临着SolrCore初始化失败的问题
techproducts_shard1_replica_n2： org.apache.solr.common.SolrException：org.apache.solr.common.SolrException： 无法创建新的 org.apache.solr.ltr.store.rest.ManagedModelStore 类型的新 ManagedResource/schema/model-store 由于： org.apache.solr.common.SolrException： org.apache.solr.ltr.model.ModelException： 模型类型不存在 org.apache.solr.ltr.model.LinearModel techproducts_shard2_replica_n6：org.apache.solr.common.SolrException：org.apache.solr.common.SolrException：无法创建新的 org.apache.solr.ltr.store.rest.ManagedModelStore 类型的新 ManagedResource/schema/model-store 由于： org.apache.solr.common.SolrException： org.apache.solr.ltr.model.ModelException： 模型类型不存在 org.apache.solr.ltr.model.LinearModel 请查看您的日志以获取更多信息
这些是 solr 日志：-
**2019-12-04 12:44:05.760 ERROR (searcherExecutor-15-thread-1-processing-n:192.168.137.1:8983_solr x:techproducts_shard1_replica_n2 c:techproducts s:shard1 r:core_node5) [c:techproducts s:shard1 r:core_node5 x:techproducts_shard1_replica_n2] o.a.s.h.RequestHandlerBase java.lang.NullPointerException
at org.apache.solr.handler.component.SearchHandler.initComponents(SearchHandler.java:183)
at org.apache.solr.handler.component.SearchHandler.getComponents(SearchHandler.java:203)
at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:260)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:199)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2578)
at org.apache.solr.core.QuerySenderListener.newSearcher(QuerySenderListener.java:74)
at org.apache.solr.core.SolrCore.lambda$getSearcher$18(SolrCore.java:2344)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:209)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
2019-12-04 12:44:05.760 ERROR (searcherExecutor-14-thread-1-processing-n:192.168.137.1:8983_solr x:techproducts_shard2_replica_n6 c:techproducts s:shard2 r:core_node8) [c:techproducts s:shard2 r:core_node8 x:techproducts_shard2_replica_n6] o.a.s.h.RequestHandlerBase java.lang.NullPointerException
at org.apache.solr.handler.component.SearchHandler.initComponents(SearchHandler.java:183)
at org.apache.solr.handler.component.SearchHandler.getComponents(SearchHandler.java:203)
at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:260)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:199)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2578)
at org.apache.solr.core.QuerySenderListener.newSearcher(QuerySenderListener.java:74)
at org.apache.solr.core.SolrCore.lambda$getSearcher$18(SolrCore.java:2344)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:209)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
匹配 Solr 版本和动物园管理员的兼容性.... 对于Solr 8.2.0，请使用zookepeer 3.5.6