mcvsubbu commented on a change in pull request #4536: [Instance Assignment] 
Rename instance level replica to replica-group
URL: https://github.com/apache/incubator-pinot/pull/4536#discussion_r315449791
 
 

 ##########
 File path: 
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/assignment/InstancePartitions.java
 ##########
 @@ -33,19 +33,21 @@
 /**
  * Instance (server) partitions for the table.
  *
- * <p>The instance partitions is stored as a map from partition of the format: 
{@code <partitionId>_<replicaId>} to
+ * <p>The instance partitions is stored as a map from partition of the format: 
{@code <partitionId>_<replicaGroupId>} to
  * list of server instances, and is persisted under the ZK path: {@code 
<cluster>/PROPERTYSTORE/INSTANCE_PARTITIONS}.
+ * <p>When partition is not enabled, all instances will be stored as partition 
0.
 
 Review comment:
   Suggest : s/partition/column value based partitioning/
   - Also, clarify the znode name. Is it raw table name or typed table name?
   Need to clarify somewhere that this has nothing to do with stream partitions.

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