diff --git a/extensions/parquet/table/src/main/java/io/deephaven/parquet/table/ParquetTools.java b/extensions/parquet/table/src/main/java/io/deephaven/parquet/table/ParquetTools.java
index 8879c14136d..fb2084e51a3 100644
--- a/extensions/parquet/table/src/main/java/io/deephaven/parquet/table/ParquetTools.java
+++ b/extensions/parquet/table/src/main/java/io/deephaven/parquet/table/ParquetTools.java
@@ -51,6 +51,7 @@
 import java.nio.file.Path;
 import java.nio.file.attribute.BasicFileAttributes;
 import java.util.*;
+import java.util.stream.StreamSupport;
 
 import static io.deephaven.parquet.table.ParquetTableWriter.PARQUET_FILE_EXTENSION;
 import static io.deephaven.util.type.TypeUtils.getUnboxedTypeIfBoxed;
@@ -594,15 +595,14 @@ private static Table readTableInternal(
             final Path firstEntryPath;
             // Ignore dot files while looking for the first entry
             try (final DirectoryStream<Path> sourceStream =
-                    Files.newDirectoryStream(sourcePath, (path) -> {
-                        final String filename = path.getFileName().toString();
-                        return !filename.isEmpty() && filename.charAt(0) != '.';
-                    })) {
-                final Iterator<Path> entryIterator = sourceStream.iterator();
-                if (!entryIterator.hasNext()) {
+                    Files.newDirectoryStream(sourcePath, ParquetTools::ignoreDotFiles)) {
+                // Lexicographical comparison
+                firstEntryPath = StreamSupport.stream(sourceStream.spliterator(), false)
+                        .min(Path::compareTo)
+                        .orElse(null);
+                if (firstEntryPath == null) {
                     throw new TableDataException("Source directory " + source + " is empty");
                 }
-                firstEntryPath = entryIterator.next();
             } catch (IOException e) {
                 throw new TableDataException("Error reading source directory " + source, e);
             }
@@ -619,6 +619,11 @@ private static Table readTableInternal(
         throw new TableDataException("Source " + source + " is neither a directory nor a regular file");
     }
 
+    private static boolean ignoreDotFiles(Path path) {
+        final String filename = path.getFileName().toString();
+        return !filename.isEmpty() && filename.charAt(0) != '.';
+    }
+
     private static BasicFileAttributes readAttributes(@NotNull final Path path) {
         try {
             return Files.readAttributes(path, BasicFileAttributes.class);