deniskuzZ commented on code in PR #5955:
URL: https://github.com/apache/hive/pull/5955#discussion_r2227823924


##########
standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/conf/MetastoreConf.java:
##########
@@ -1728,6 +1728,10 @@ public enum ConfVars {
                     " and password. Any other value is ignored right now but 
may be used later."
                 + "If JWT- Supported only in HTTP transport mode. If set, HMS 
Client will pick the value of JWT from "
                 + "environment variable HMS_JWT and set it in Authorization 
header in http request"),
+    METASTORE_CLIENT_CLASS("metastore.client.class",
+        "hive.metastore.client.class",
+        "org.apache.hadoop.hive.metastore.client.ThriftHiveMetaStoreClient",
+        "The name of MetaStoreClient class that implements the 
IMetaStoreClient interface."),

Review Comment:
   I don't think we need multiple client impl for the same catalog (aka 
Snowflake, Glue, HMS, Rest, etc) 
   Instead, I’d suggest using a simple comma-separated list. Later, that would 
be persisted to the backend database during the Catalog registration 
(HIVE-26227)
   ````
   METASTORE_CLIENT_IMPL("metastore.client.impl", catalog:client_classname)
   ````



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