diff --git a/java-client/barrage/src/main/java/io/deephaven/client/impl/BarrageSnapshotImpl.java b/java-client/barrage/src/main/java/io/deephaven/client/impl/BarrageSnapshotImpl.java
index d7aeddfebdf..1cf704e6aa6 100644
--- a/java-client/barrage/src/main/java/io/deephaven/client/impl/BarrageSnapshotImpl.java
+++ b/java-client/barrage/src/main/java/io/deephaven/client/impl/BarrageSnapshotImpl.java
@@ -201,6 +201,8 @@ public synchronized BarrageTable partialTable(RowSet viewport, BitSet columns, b
                 .setAppMetadata(ByteStringAccess.wrap(makeRequestInternal(viewport, columns, reverseViewport, options)))
                 .build());
 
+        observer.onCompleted();
+
         while (!completed && exceptionWhileCompleting == null) {
             // handle the condition where this function may have the exclusive lock
             if (completedCondition != null) {
@@ -210,8 +212,6 @@ public synchronized BarrageTable partialTable(RowSet viewport, BitSet columns, b
             }
         }
 
-        observer.onCompleted();
-
         if (exceptionWhileCompleting == null) {
             return resultTable;
         } else {