Julien Massiera created SOLR-16678:
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             Summary: Collection API v2 CREATE does not handle user-defined 
properties
                 Key: SOLR-16678
                 URL: https://issues.apache.org/jira/browse/SOLR-16678
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
          Components: v2 API
    Affects Versions: 9.1
            Reporter: Julien Massiera


According to this documentation 
[https://solr.apache.org/guide/solr/latest/configuration-guide/property-substitution.html],
 we should be able with the Collection API v2 CREATE, to define custom core 
properties and use them in the solrconfig.xml file

This is not working properly as, for example, if I try to define a "lib.path" 
property that I use in the solrconfig.xml of my collection, I get the following 
error:


{code:java}
curl -XPOST http://localhost:8983/api/collections -H 'Content-Type: 
application/json' -d '{"create": {"name": "MyCollection", "config": "Init", 
"numShards": 2, "replicationFactor":1, "property.lib.path":"/my/lib/path"}}' 

{
  "responseHeader":{
    "status":400,
    "QTime":738},
  "failure":{
    
"127.0.0.1:8983_solr":"org.apache.solr.client.solrj.impl.BaseHttpSolrClient$RemoteSolrException:Error
 from server at null: Error CREATEing SolrCore 
'MyCollection_shard1_replica_n3': Unable to create core 
[MyCollection_shard1_replica_n3] Caused by: No system property or default value 
specified for lib.path value:${lib.path}/Custom",
    
"127.0.0.1:8983_solr":"org.apache.solr.client.solrj.impl.BaseHttpSolrClient$RemoteSolrException:Error
 from server at null: Error CREATEing SolrCore 
'MyCollection_shard2_replica_n1': Unable to create core 
[MyCollection_shard2_replica_n1] Caused by: No system property or default value 
specified for lib.path value:${lib.path}/Custom"},
  "Operation create caused 
exception:":"org.apache.solr.common.SolrException:org.apache.solr.common.SolrException:
 Underlying core creation failed while creating collection: MyCollection",
  "exception":{
    "msg":"Underlying core creation failed while creating collection: 
MyCollection",
    "rspCode":400},
  "error":{
    "metadata":[
      "error-class","org.apache.solr.common.SolrException",
      "root-error-class","org.apache.solr.common.SolrException"],
    "msg":"Underlying core creation failed while creating collection: 
MyCollection",
    "code":400}}{code}
  

Doing the same with the Collection API v1 properly works:
{code:java}
curl -XGET 
"http://localhost:8983/solr/admin/collections?action=CREATE&name=MyCollection&collection.configName=Init&numShards=2&maxShardsPerNode=2&replicationFactor=1&property.lib.path=/my/lib/path";

{
  "responseHeader":{
    "status":0,
    "QTime":1419},
  "success":{
    "127.0.0.1:8983_solr":{
      "responseHeader":{
        "status":0,
        "QTime":1062},
      "core":"MyCollection_shard1_replica_n3"},
    "127.0.0.1:8983_solr":{
      "responseHeader":{
        "status":0,
        "QTime":1062},
      "core":"MyCollection_shard2_replica_n1"}}} {code}



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