hnwyllmm commented on code in PR #760:
URL: https://github.com/apache/arrow-java/pull/760#discussion_r2120532636


##########
c/src/test/java/org/apache/arrow/c/ExceptionTest.java:
##########
@@ -0,0 +1,172 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.arrow.c;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.RootAllocator;
+import org.apache.arrow.vector.IntVector;
+import org.apache.arrow.vector.VectorLoader;
+import org.apache.arrow.vector.VectorSchemaRoot;
+import org.apache.arrow.vector.VectorUnloader;
+import org.apache.arrow.vector.dictionary.Dictionary;
+import org.apache.arrow.vector.dictionary.DictionaryProvider;
+import org.apache.arrow.vector.ipc.ArrowReader;
+import org.apache.arrow.vector.ipc.message.ArrowRecordBatch;
+import org.apache.arrow.vector.types.pojo.ArrowType;
+import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.Schema;
+import org.junit.jupiter.api.Test;
+
+final class ExceptionTest {
+  @Test
+  public void testException() throws IOException {
+    final Schema schema =
+        new Schema(Collections.singletonList(Field.nullable("ints", new 
ArrowType.Int(32, true))));
+    final List<Object> batches = new ArrayList<>();
+
+    try (BufferAllocator allocator = new RootAllocator();
+         VectorSchemaRoot root = VectorSchemaRoot.create(schema, allocator)) {
+      final IntVector ints = (IntVector) root.getVector(0);
+      VectorUnloader unloader = new VectorUnloader(root);
+
+      root.allocateNew();
+      ints.setSafe(0, 1);
+      ints.setSafe(1, 2);
+      ints.setSafe(2, 4);
+      ints.setSafe(3, 8);
+      root.setRowCount(4);
+      batches.add(unloader.getRecordBatch());
+
+      final String exceptionMessage = "java.lang.RuntimeException: Error 
occurred while getting next schema root.\n\tat 
org.apache.arrow.adapter.jdbc.ArrowVectorIterator.next(ArrowVectorIterator.java:205)\n\tat
 
com.oceanbase.external.jdbc.JdbcScanner.loadNextBatch(JdbcScanner.java:73)\n\tat
 
org.apache.arrow.c.ArrayStreamExporter$ExportedArrayStreamPrivateData.getNext(ArrayStreamExporter.java:72)\nCaused
 by: java.lang.RuntimeException: Error occurred while consuming data.\n\tat 
org.apache.arrow.adapter.jdbc.ArrowVectorIterator.consumeData(ArrowVectorIterator.java:127)\n\tat
 
org.apache.arrow.adapter.jdbc.ArrowVectorIterator.load(ArrowVectorIterator.java:178)\n\tat
 
org.apache.arrow.adapter.jdbc.ArrowVectorIterator.next(ArrowVectorIterator.java:198)\n\t...
 2 more\nCaused by: java.lang.OutOfMemoryError: Java heap space\n";

Review Comment:
   fixed



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