Fixed wrong type in ApacheArrowPartsHandler

query/src/main/java/tech/ydb/query/result/arrow/ApacheArrowCompressedPartsHandler.java

@@ -2,7 +2,7 @@
 
 import io.grpc.ExperimentalApi;
 import org.apache.arrow.compression.CommonsCompressionFactory;
-import org.apache.arrow.memory.RootAllocator;
+import org.apache.arrow.memory.BufferAllocator;
 import org.apache.arrow.vector.VectorLoader;
 import org.apache.arrow.vector.VectorSchemaRoot;
 
@@ -12,7 +12,7 @@
  */
 @ExperimentalApi("ApacheArrow support is experimental and API may change without notice")
 public abstract class ApacheArrowCompressedPartsHandler extends ApacheArrowPartsHandler {
-    public ApacheArrowCompressedPartsHandler(RootAllocator allocator) {
+    public ApacheArrowCompressedPartsHandler(BufferAllocator allocator) {
         super(allocator);
     }
 

query/src/main/java/tech/ydb/query/result/arrow/ApacheArrowPartsHandler.java

@@ -6,7 +6,7 @@
 
 import com.google.protobuf.ByteString;
 import io.grpc.ExperimentalApi;
-import org.apache.arrow.memory.RootAllocator;
+import org.apache.arrow.memory.BufferAllocator;
 import org.apache.arrow.vector.VectorLoader;
 import org.apache.arrow.vector.VectorSchemaRoot;
 import org.apache.arrow.vector.ipc.ReadChannel;
@@ -24,9 +24,9 @@
  */
 @ExperimentalApi("ApacheArrow support is experimental and API may change without notice")
 public abstract class ApacheArrowPartsHandler implements QueryStream.PartsHandler {
-    private final RootAllocator allocator;
+    private final BufferAllocator allocator;
 
-    public ApacheArrowPartsHandler(RootAllocator allocator) {
+    public ApacheArrowPartsHandler(BufferAllocator allocator) {
         this.allocator = allocator;
     }
 

query/src/test/java/tech/ydb/query/impl/ApacheArrowTest.java

@@ -110,8 +110,8 @@ public static void initTables() {
         allocator = new RootAllocator();
         client = QueryClient.newClient(YDB).build();
 
-        initTable(tablePath(ROW_TABLE_NAME), AllTypesRecord.createTableDescription(false), ROW_BATCH);
-        initTable(tablePath(COLUMN_TABLE_NAME), AllTypesRecord.createTableDescription(true), COLUMN_BATCH);
+        initTable(tablePath(ROW_TABLE_NAME), ROW_TABLE, ROW_BATCH);
+        initTable(tablePath(COLUMN_TABLE_NAME), COLUMN_TABLE, COLUMN_BATCH);
     }
 
     @AfterClass

table/src/test/java/tech/ydb/table/integration/BulkUpsertTest.java

@@ -13,6 +13,7 @@
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.ClassRule;
+import org.junit.Ignore;
 import org.junit.Test;
 
 import tech.ydb.core.grpc.GrpcReadStream;
@@ -22,12 +23,14 @@
 import tech.ydb.table.impl.SimpleTableClient;
 import tech.ydb.table.query.BulkUpsertData;
 import tech.ydb.table.query.Params;
+import tech.ydb.table.query.arrow.ApacheArrowData;
 import tech.ydb.table.query.arrow.ApacheArrowWriter;
 import tech.ydb.table.result.ResultSetReader;
 import tech.ydb.table.rpc.grpc.GrpcTableRpc;
 import tech.ydb.table.settings.ExecuteScanQuerySettings;
 import tech.ydb.table.settings.ExecuteSchemeQuerySettings;
 import tech.ydb.table.values.ListValue;
+import tech.ydb.table.values.PrimitiveType;
 import tech.ydb.table.values.PrimitiveValue;
 import tech.ydb.test.junit4.GrpcTransportRule;
 
@@ -160,11 +163,57 @@ public void writeProtobufToColumnShardTable() {
         Assert.assertEquals(5000, rows2Count);
     }
 
+    @Test
+    @Ignore("https://github.com/ydb-platform/ydb/issues/36331")
+    public void writeApacheArrowEmptyStringToDataShardTest() {
+        // Create table
+        TableDescription table = TableDescription.newBuilder()
+                .addNullableColumn("id", PrimitiveType.Int32)
+                .addNullableColumn("text", PrimitiveType.Text)
+                .setPrimaryKey("id")
+                .build();
+
+        createTable(table);
+
+        ApacheArrowWriter.Schema schema = ApacheArrowWriter.newSchema()
+                .addNullableColumn("id", PrimitiveType.Int32)
+                .addNullableColumn("text", PrimitiveType.Text);
+
+        try (BufferAllocator allocator = new RootAllocator()) {
+            try (ApacheArrowWriter writer = schema.createWriter(allocator)) {
+                // create batch with estimated size
+                ApacheArrowWriter.Batch batch = writer.createNewBatch(1);
+                ApacheArrowWriter.Row row = batch.writeNextRow();
+                row.writeInt32("id", 1);
+                row.writeText("text", "");
+                ApacheArrowData data = batch.buildBatch();
+                bulkUpsert(data);
+            } catch (IOException ex) {
+                throw new AssertionError("Cannot serialize apache arrow", ex);
+            }
+        }
+
+        retryCtx.supplyStatus(session -> {
+            GrpcReadStream<ResultSetReader> stream = session.executeScanQuery(
+                    "SELECT * FROM `" + TEST_TABLE + "`;",
+                    Params.empty(),
+                    ExecuteScanQuerySettings.newBuilder().build()
+            );
+
+            return stream.start((rs) -> {
+                Assert.assertTrue(rs.next());
+                Assert.assertEquals(1, rs.getColumn("id").getInt32());
+                Assert.assertEquals("", rs.getColumn("text").getText());
+                Assert.assertFalse(rs.next());
+            });
+        }).join().expectSuccess("cannot read table");
+    }
+
     @Test
     public void writeApacheArrowToDataShardTest() {
         // Create table
         TableDescription table = AllTypesRecord.createTableDescription(false);
-        retryCtx.supplyStatus(s -> s.createTable(tablePath(), table)).join().expectSuccess("Cannot create table");
+        createTable(table);
 
         Set<String> columnNames = table.getColumns().stream().map(TableColumn::getName).collect(Collectors.toSet());
 
@@ -210,7 +259,7 @@ public void writeApacheArrowToDataShardTest() {
     public void writeApacheArrowToColumnShardTest() {
         // Create table
         TableDescription table = AllTypesRecord.createTableDescription(true);
-        retryCtx.supplyStatus(s -> s.createTable(tablePath(), table)).join().expectSuccess("Cannot create table");
+        createTable(table);
 
         Set<String> columnNames = table.getColumns().stream().map(TableColumn::getName).collect(Collectors.toSet());