diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/BaseChunkWriter.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/BaseChunkWriter.java
index 33300a800b3..0a1e0f94046 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/BaseChunkWriter.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/BaseChunkWriter.java
@@ -124,14 +124,17 @@ public int available() throws IOException {
         }
 
         /**
-         * There are two cases we don't send a validity buffer: - the simplest case is following the arrow flight spec,
-         * which says that if there are no nulls present, the buffer is optional. - Our implementation of nullCount()
-         * for primitive types will return zero if the useDeephavenNulls flag is set, so the buffer will also be omitted
-         * in that case. The client's marshaller does not need to be aware of deephaven nulls but in this mode we assume
-         * the consumer understands which value is the assigned NULL.
+         * @formatter:off
+         * There are two cases we don't send a validity buffer:
+         * - the simplest case is following the arrow flight spec, which says that if there are no nulls present, the
+         *   buffer is optional.
+         * - Our implementation of nullCount() for primitive types will return zero if the useDeephavenNulls flag is
+         *   set, so the buffer will also be omitted in that case. The client's marshaller does not need to be aware of
+         *   deephaven nulls but in this mode we assume the consumer understands which value is the assigned NULL.
+         * @formatter:on
          */
         protected boolean sendValidityBuffer() {
-            return !fieldNullable || nullCount() != 0;
+            return fieldNullable && nullCount() != 0;
         }
 
         @Override
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/BooleanChunkReader.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/BooleanChunkReader.java
index 2c289e4e859..a2887ddda6d 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/BooleanChunkReader.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/BooleanChunkReader.java
@@ -3,9 +3,11 @@
 //
 package io.deephaven.extensions.barrage.chunk;
 
+import io.deephaven.base.verify.Assert;
 import io.deephaven.chunk.WritableByteChunk;
 import io.deephaven.chunk.WritableChunk;
 import io.deephaven.chunk.WritableLongChunk;
+import io.deephaven.chunk.WritableObjectChunk;
 import io.deephaven.chunk.attributes.Values;
 import io.deephaven.util.BooleanUtils;
 import io.deephaven.util.datastructures.LongSizedDataStructure;
@@ -16,6 +18,7 @@
 import java.io.IOException;
 import java.util.Iterator;
 import java.util.PrimitiveIterator;
+import java.util.function.Function;
 
 import static io.deephaven.extensions.barrage.chunk.BaseChunkWriter.getNumLongsForBitPackOfSize;
 
@@ -39,6 +42,32 @@ public BooleanChunkReader(ByteConversion conversion) {
         this.conversion = conversion;
     }
 
+    public <T> ChunkReader<WritableObjectChunk<T, Values>> transform(Function<Byte, T> transform) {
+        return (fieldNodeIter, bufferInfoIter, is, outChunk, outOffset, totalRows) -> {
+            try (final WritableByteChunk<Values> inner = BooleanChunkReader.this.readChunk(
+                    fieldNodeIter, bufferInfoIter, is, null, 0, 0)) {
+
+                final WritableObjectChunk<T, Values> chunk = castOrCreateChunk(
+                        outChunk,
+                        Math.max(totalRows, inner.size()),
+                        WritableObjectChunk::makeWritableChunk,
+                        WritableChunk::asWritableObjectChunk);
+
+                if (outChunk == null) {
+                    // if we're not given an output chunk then we better be writing at the front of the new one
+                    Assert.eqZero(outOffset, "outOffset");
+                }
+
+                for (int ii = 0; ii < inner.size(); ++ii) {
+                    byte value = inner.get(ii);
+                    chunk.set(outOffset + ii, transform.apply(value));
+                }
+
+                return chunk;
+            }
+        };
+    }
+
     @Override
     public WritableByteChunk<Values> readChunk(
             @NotNull final Iterator<ChunkWriter.FieldNodeInfo> fieldNodeIter,
@@ -99,7 +128,6 @@ public WritableByteChunk<Values> readChunk(
         return chunk;
     }
 
-
     private static void useValidityBuffer(
             final ByteConversion conversion,
             final DataInput is,
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ByteChunkReader.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ByteChunkReader.java
index 5133eaaff4e..8e6f24d39f5 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ByteChunkReader.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ByteChunkReader.java
@@ -84,7 +84,6 @@ public <T> ChunkReader<WritableObjectChunk<T, Values>> transform(Function<Byte,
                     byte value = inner.get(ii);
                     chunk.set(outOffset + ii, transform.apply(value));
                 }
-                chunk.setSize(outOffset + inner.size());
 
                 return chunk;
             }
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ByteChunkWriter.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ByteChunkWriter.java
index b608f71fe2e..3328e0617c4 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ByteChunkWriter.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ByteChunkWriter.java
@@ -25,9 +25,9 @@
 public class ByteChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>> extends BaseChunkWriter<SOURCE_CHUNK_TYPE> {
     private static final String DEBUG_NAME = "ByteChunkWriter";
     private static final ByteChunkWriter<ByteChunk<Values>> NULLABLE_IDENTITY_INSTANCE = new ByteChunkWriter<>(
-            ByteChunk::isNull, ByteChunk::getEmptyChunk, ByteChunk::get, false);
-    private static final ByteChunkWriter<ByteChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new ByteChunkWriter<>(
             ByteChunk::isNull, ByteChunk::getEmptyChunk, ByteChunk::get, true);
+    private static final ByteChunkWriter<ByteChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new ByteChunkWriter<>(
+            ByteChunk::isNull, ByteChunk::getEmptyChunk, ByteChunk::get, false);
 
 
     public static ByteChunkWriter<ByteChunk<Values>> getIdentity(boolean isNullable) {
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/CharChunkReader.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/CharChunkReader.java
index f95f39a2ed5..e51e02b3c98 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/CharChunkReader.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/CharChunkReader.java
@@ -80,7 +80,6 @@ public <T> ChunkReader<WritableObjectChunk<T, Values>> transform(Function<Charac
                     char value = inner.get(ii);
                     chunk.set(outOffset + ii, transform.apply(value));
                 }
-                chunk.setSize(outOffset + inner.size());
 
                 return chunk;
             }
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/CharChunkWriter.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/CharChunkWriter.java
index dd96e696bfe..09833d2dd55 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/CharChunkWriter.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/CharChunkWriter.java
@@ -21,9 +21,9 @@
 public class CharChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>> extends BaseChunkWriter<SOURCE_CHUNK_TYPE> {
     private static final String DEBUG_NAME = "CharChunkWriter";
     private static final CharChunkWriter<CharChunk<Values>> NULLABLE_IDENTITY_INSTANCE = new CharChunkWriter<>(
-            CharChunk::isNull, CharChunk::getEmptyChunk, CharChunk::get, false);
-    private static final CharChunkWriter<CharChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new CharChunkWriter<>(
             CharChunk::isNull, CharChunk::getEmptyChunk, CharChunk::get, true);
+    private static final CharChunkWriter<CharChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new CharChunkWriter<>(
+            CharChunk::isNull, CharChunk::getEmptyChunk, CharChunk::get, false);
 
 
     public static CharChunkWriter<CharChunk<Values>> getIdentity(boolean isNullable) {
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/DefaultChunkReaderFactory.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/DefaultChunkReaderFactory.java
index 9fe71ffdd0f..f17f64183df 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/DefaultChunkReaderFactory.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/DefaultChunkReaderFactory.java
@@ -25,6 +25,7 @@
 import io.deephaven.internal.log.LoggerFactory;
 import io.deephaven.io.logger.Logger;
 import io.deephaven.time.DateTimeUtils;
+import io.deephaven.util.BooleanUtils;
 import io.deephaven.util.QueryConstants;
 import io.deephaven.util.type.TypeUtils;
 import io.deephaven.vector.Vector;
@@ -275,7 +276,17 @@ public <T extends WritableChunk<Values>> ChunkReader<T> newReaderPojo(
 
         if (typeId == ArrowType.ArrowTypeID.Union) {
             final ArrowType.Union unionType = (ArrowType.Union) field.getType();
-            final List<ChunkReader<WritableChunk<Values>>> innerReaders = new ArrayList<>();
+            final List<ChunkReader<? extends WritableChunk<Values>>> innerReaders = new ArrayList<>();
+
+            for (int ii = 0; ii < field.getChildren().size(); ++ii) {
+                final Field childField = field.getChildren().get(ii);
+                final BarrageTypeInfo<Field> childTypeInfo = BarrageUtil.getDefaultType(childField);
+                ChunkReader<? extends WritableChunk<Values>> childReader = newReaderPojo(childTypeInfo, options, false);
+                if (childField.getType().getTypeID() == ArrowType.ArrowTypeID.Bool) {
+                    childReader = ((BooleanChunkReader) childReader).transform(BooleanUtils::byteAsBoolean);
+                }
+                innerReaders.add(childReader);
+            }
 
             // noinspection unchecked
             return (ChunkReader<T>) new UnionChunkReader<T>(
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/DoubleChunkWriter.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/DoubleChunkWriter.java
index 60341a7df74..60dbe84efe8 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/DoubleChunkWriter.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/DoubleChunkWriter.java
@@ -25,9 +25,9 @@
 public class DoubleChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>> extends BaseChunkWriter<SOURCE_CHUNK_TYPE> {
     private static final String DEBUG_NAME = "DoubleChunkWriter";
     private static final DoubleChunkWriter<DoubleChunk<Values>> NULLABLE_IDENTITY_INSTANCE = new DoubleChunkWriter<>(
-            DoubleChunk::isNull, DoubleChunk::getEmptyChunk, DoubleChunk::get, false);
-    private static final DoubleChunkWriter<DoubleChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new DoubleChunkWriter<>(
             DoubleChunk::isNull, DoubleChunk::getEmptyChunk, DoubleChunk::get, true);
+    private static final DoubleChunkWriter<DoubleChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new DoubleChunkWriter<>(
+            DoubleChunk::isNull, DoubleChunk::getEmptyChunk, DoubleChunk::get, false);
 
 
     public static DoubleChunkWriter<DoubleChunk<Values>> getIdentity(boolean isNullable) {
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/FloatChunkWriter.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/FloatChunkWriter.java
index de0ec413fff..7832beb98cf 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/FloatChunkWriter.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/FloatChunkWriter.java
@@ -25,9 +25,9 @@
 public class FloatChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>> extends BaseChunkWriter<SOURCE_CHUNK_TYPE> {
     private static final String DEBUG_NAME = "FloatChunkWriter";
     private static final FloatChunkWriter<FloatChunk<Values>> NULLABLE_IDENTITY_INSTANCE = new FloatChunkWriter<>(
-            FloatChunk::isNull, FloatChunk::getEmptyChunk, FloatChunk::get, false);
-    private static final FloatChunkWriter<FloatChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new FloatChunkWriter<>(
             FloatChunk::isNull, FloatChunk::getEmptyChunk, FloatChunk::get, true);
+    private static final FloatChunkWriter<FloatChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new FloatChunkWriter<>(
+            FloatChunk::isNull, FloatChunk::getEmptyChunk, FloatChunk::get, false);
 
 
     public static FloatChunkWriter<FloatChunk<Values>> getIdentity(boolean isNullable) {
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/IntChunkReader.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/IntChunkReader.java
index d72bf2c3b3e..8ec0d0ddc29 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/IntChunkReader.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/IntChunkReader.java
@@ -84,7 +84,6 @@ public <T> ChunkReader<WritableObjectChunk<T, Values>> transform(Function<Intege
                     int value = inner.get(ii);
                     chunk.set(outOffset + ii, transform.apply(value));
                 }
-                chunk.setSize(outOffset + inner.size());
 
                 return chunk;
             }
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/IntChunkWriter.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/IntChunkWriter.java
index 4f566b586a2..1e0ee6b9839 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/IntChunkWriter.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/IntChunkWriter.java
@@ -25,9 +25,9 @@
 public class IntChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>> extends BaseChunkWriter<SOURCE_CHUNK_TYPE> {
     private static final String DEBUG_NAME = "IntChunkWriter";
     private static final IntChunkWriter<IntChunk<Values>> NULLABLE_IDENTITY_INSTANCE = new IntChunkWriter<>(
-            IntChunk::isNull, IntChunk::getEmptyChunk, IntChunk::get, false);
-    private static final IntChunkWriter<IntChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new IntChunkWriter<>(
             IntChunk::isNull, IntChunk::getEmptyChunk, IntChunk::get, true);
+    private static final IntChunkWriter<IntChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new IntChunkWriter<>(
+            IntChunk::isNull, IntChunk::getEmptyChunk, IntChunk::get, false);
 
 
     public static IntChunkWriter<IntChunk<Values>> getIdentity(boolean isNullable) {
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/LongChunkReader.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/LongChunkReader.java
index a179c43e60a..8663d530da9 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/LongChunkReader.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/LongChunkReader.java
@@ -84,7 +84,6 @@ public <T> ChunkReader<WritableObjectChunk<T, Values>> transform(Function<Long,
                     long value = inner.get(ii);
                     chunk.set(outOffset + ii, transform.apply(value));
                 }
-                chunk.setSize(outOffset + inner.size());
 
                 return chunk;
             }
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/LongChunkWriter.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/LongChunkWriter.java
index 02e1e92e207..63ec4638837 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/LongChunkWriter.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/LongChunkWriter.java
@@ -25,9 +25,9 @@
 public class LongChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>> extends BaseChunkWriter<SOURCE_CHUNK_TYPE> {
     private static final String DEBUG_NAME = "LongChunkWriter";
     private static final LongChunkWriter<LongChunk<Values>> NULLABLE_IDENTITY_INSTANCE = new LongChunkWriter<>(
-            LongChunk::isNull, LongChunk::getEmptyChunk, LongChunk::get, false);
-    private static final LongChunkWriter<LongChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new LongChunkWriter<>(
             LongChunk::isNull, LongChunk::getEmptyChunk, LongChunk::get, true);
+    private static final LongChunkWriter<LongChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new LongChunkWriter<>(
+            LongChunk::isNull, LongChunk::getEmptyChunk, LongChunk::get, false);
 
 
     public static LongChunkWriter<LongChunk<Values>> getIdentity(boolean isNullable) {
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ShortChunkReader.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ShortChunkReader.java
index 8fb615789c8..6016025ecde 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ShortChunkReader.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ShortChunkReader.java
@@ -84,7 +84,6 @@ public <T> ChunkReader<WritableObjectChunk<T, Values>> transform(Function<Short,
                     short value = inner.get(ii);
                     chunk.set(outOffset + ii, transform.apply(value));
                 }
-                chunk.setSize(outOffset + inner.size());
 
                 return chunk;
             }
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ShortChunkWriter.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ShortChunkWriter.java
index 47571306816..de6f725b71f 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ShortChunkWriter.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ShortChunkWriter.java
@@ -25,9 +25,9 @@
 public class ShortChunkWriter<SOURCE_CHUNK_TYPE extends Chunk<Values>> extends BaseChunkWriter<SOURCE_CHUNK_TYPE> {
     private static final String DEBUG_NAME = "ShortChunkWriter";
     private static final ShortChunkWriter<ShortChunk<Values>> NULLABLE_IDENTITY_INSTANCE = new ShortChunkWriter<>(
-            ShortChunk::isNull, ShortChunk::getEmptyChunk, ShortChunk::get, false);
-    private static final ShortChunkWriter<ShortChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new ShortChunkWriter<>(
             ShortChunk::isNull, ShortChunk::getEmptyChunk, ShortChunk::get, true);
+    private static final ShortChunkWriter<ShortChunk<Values>> NON_NULLABLE_IDENTITY_INSTANCE = new ShortChunkWriter<>(
+            ShortChunk::isNull, ShortChunk::getEmptyChunk, ShortChunk::get, false);
 
 
     public static ShortChunkWriter<ShortChunk<Values>> getIdentity(boolean isNullable) {
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/TransformingChunkReader.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/TransformingChunkReader.java
index 931894da676..6689e9e45ac 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/TransformingChunkReader.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/TransformingChunkReader.java
@@ -63,6 +63,7 @@ public OutputChunkType readChunk(
             for (int ii = 0; ii < wireValues.size(); ++ii) {
                 transformFunction.apply(wireValues, chunk, ii, outOffset + ii);
             }
+            chunk.setSize(outOffset + wireValues.size());
             return chunk;
         }
     }
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/UnionChunkReader.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/UnionChunkReader.java
index 294ea850892..e11f28d2abe 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/UnionChunkReader.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/UnionChunkReader.java
@@ -37,11 +37,11 @@ public static Mode mode(UnionMode mode) {
     private static final String DEBUG_NAME = "UnionChunkReader";
 
     private final Mode mode;
-    private final List<ChunkReader<WritableChunk<Values>>> readers;
+    private final List<ChunkReader<? extends WritableChunk<Values>>> readers;
 
     public UnionChunkReader(
             final Mode mode,
-            final List<ChunkReader<WritableChunk<Values>>> readers) {
+            final List<ChunkReader<? extends WritableChunk<Values>>> readers) {
         this.mode = mode;
         this.readers = readers;
         // the specification doesn't allow the union column to have more than signed byte number of types
@@ -65,7 +65,7 @@ public WritableObjectChunk<T, Values> readChunk(
         int numRows = nodeInfo.numElements;
         if (numRows == 0) {
             is.skipBytes(LongSizedDataStructure.intSize(DEBUG_NAME, coiBufferLength + offsetsBufferLength));
-            for (final ChunkReader<WritableChunk<Values>> reader : readers) {
+            for (final ChunkReader<? extends WritableChunk<Values>> reader : readers) {
                 // noinspection EmptyTryBlock
                 try (final SafeCloseable ignored = reader.readChunk(fieldNodeIter, bufferInfoIter, is, null, 0, 0)) {
                     // do nothing; we need each reader to consume fieldNodeIter and bufferInfoIter
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/table/BarrageTable.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/table/BarrageTable.java
index c153155f830..7ebce9f43d6 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/table/BarrageTable.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/table/BarrageTable.java
@@ -460,6 +460,7 @@ public static BarrageTable make(
             return value instanceof Boolean && (Boolean) value;
         };
 
+        schema.attributes.put(Table.BARRAGE_SCHEMA_ATTRIBUTE, schema.arrowSchema);
         if (getAttribute.test(Table.BLINK_TABLE_ATTRIBUTE)) {
             final LinkedHashMap<String, ColumnSource<?>> finalColumns = makeColumns(schema, writableSources);
             table = new BarrageBlinkTable(
diff --git a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/util/BarrageMessageReaderImpl.java b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/util/BarrageMessageReaderImpl.java
index 81edb2241ee..952e27e36d0 100644
--- a/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/util/BarrageMessageReaderImpl.java
+++ b/extensions/barrage/src/main/java/io/deephaven/extensions/barrage/util/BarrageMessageReaderImpl.java
@@ -265,11 +265,12 @@ public BarrageMessage safelyParseFrom(final BarrageOptions options,
                             }
 
                             // fill the chunk with data and assign back into the array
-                            chunk = readers.get(ci).readChunk(fieldNodeIter, bufferInfoIter, ois, chunk, chunk.size(),
+                            final int origSize = chunk.size();
+                            chunk = readers.get(ci).readChunk(fieldNodeIter, bufferInfoIter, ois, chunk, origSize,
                                     (int) batch.length());
                             acd.data.set(lastChunkIndex, chunk);
                             if (!options.columnsAsList()) {
-                                chunk.setSize(chunk.size() + (int) batch.length());
+                                chunk.setSize(origSize + (int) batch.length());
                             }
                         }