shunping commented on code in PR #30317:
URL: https://github.com/apache/beam/pull/30317#discussion_r1492821907


##########
sdks/java/harness/src/test/java/org/apache/beam/fn/harness/state/FakeBeamFnStateClient.java:
##########
@@ -174,6 +215,124 @@ public CompletableFuture<StateResponse> 
handle(StateRequest.Builder requestBuild
         response = 
StateResponse.newBuilder().setAppend(StateAppendResponse.getDefaultInstance());
         break;
 
+      case ORDERED_LIST_GET:
+        {
+          long start = request.getOrderedListGet().getRange().getStart();
+          long end = request.getOrderedListGet().getRange().getEnd();
+
+          KvCoder<Long, Integer> coder = KvCoder.of(VarLongCoder.of(), 
VarIntCoder.of());
+          long sortKey = start;
+          int index = 0;
+          if (request.getOrderedListGet().getContinuationToken().size() > 0) {

Review Comment:
   The code here is to check if there is a non-empty continuation token. An 
empty continuation token in the get request suggests it should return the first 
block in the query range. Non-empty continuation token here contains 
information of which block it is requesting.



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