junglechange opened a new issue, #37911:
URL: https://github.com/apache/arrow/issues/37911
### Describe the usage question you have. Please include as many useful
details as possible.
- arrow: 11.0.0
Running the following code results in the following error：
ERROR | 2023-09-27 23:53:55:393 | [main] memory.BaseAllocator
(BaseAllocator.java:436) - Memory was leaked by query. Memory leaked: (2)
Allocator(ROOT) 0/2/66562/9223372036854775807 (res/actual/peak/limit)
Exception in thread "main" java.lang.IllegalStateException: Memory was
leaked by query. Memory leaked: (2)
Allocator(ROOT) 0/2/66562/9223372036854775807 (res/actual/peak/limit)
at org.apache.arrow.memory.BaseAllocator.close(BaseAllocator.java:437)
at org.apache.arrow.memory.RootAllocator.close(RootAllocator.java:29)
```java
public static void main(String[] args) {
RootAllocator rootAllocator = new RootAllocator(Long.MAX_VALUE);
VectorSchemaRoot vectorSchemaRoot = listVectorSchemaRoot(rootAllocator);
vectorSchemaRoot.close();
rootAllocator.close();
}
public static VectorSchemaRoot listVectorSchemaRoot(BufferAllocator
bufferAllocator) {
ListVector listVector = ListVector.empty("list", bufferAllocator);
UnionListWriter listWriter = listVector.getWriter();
listWriter.allocate();
listWriter.start();
int listVectorCount = 1;
for (int i = 0; i < listVectorCount; i++) {
listWriter.setPosition(i);
listWriter.startList();
BaseWriter.StructWriter structWriter = listWriter.struct();
structWriter.start();
// structWriter.integer("code").writeInt(1); // use this,not memory leak
VarCharWriter codeWriter = structWriter.varChar("code");
writeString(bufferAllocator, codeWriter, "c" + i);
structWriter.end();
listWriter.endList();
}
listWriter.end();
listWriter.setValueCount(listVectorCount);
return new VectorSchemaRoot(Arrays.asList(listVector));
}
private static void writeString(BufferAllocator bufferAllocator,
VarCharWriter varCharWriter,
String string) {
byte[] bytes = string.getBytes(StandardCharsets.UTF_8);
ArrowBuf tmp = bufferAllocator.buffer(bytes.length);
tmp.setBytes(0, bytes);
varCharWriter.writeVarChar(0, bytes.length, tmp);
}
```
### Component(s)
Java
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