private void enableReplicaIfNeeded() {
    if (config.storeSetLocalPartitionStateEnabled && replicaStatusDelegates != null) {
      for (ReplicaStatusDelegate replicaStatusDelegate : replicaStatusDelegates) {
        replicaStatusDelegate.enableReplica(replicaId);
      }
    }
  }
Check disabled state of current store(replica), if it is on disabled list, remove it and re-enable the replica.
Current store might be shut down and disabled due to disk I/O error and now it is able to restart after disk is
fixed/replaced. This method is called at the end of startup to re-enable this store if it's still in disabled state.
ambry-store/src/main/java/com/github/ambry/store/BlobStore.java