Xianyang Liu created ARROW-17338:
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Summary: [Java] The maximum request memory of
BaseVariableWidthVector should limit to Interger.MAX_VALUE
Key: ARROW-17338
URL: https://issues.apache.org/jira/browse/ARROW-17338
Project: Apache Arrow
Issue Type: Bug
Components: Java
Reporter: Xianyang Liu
The following code of `BaseVariableWidthVector.handleSafe` could fail to
relocated because of int overflow and then led to `IndexOutOfBoundsException`
when we put the data into the vector.
```java
protected final void handleSafe(int index, int dataLength) {
while (index >= getValueCapacity()) {
reallocValidityAndOffsetBuffers();
}
final int startOffset = lastSet < 0 ? 0 : getStartOffset(lastSet + 1);
// Here, the startOffset + dataLength could overflow
while (valueBuffer.capacity() < (startOffset + dataLength)) {
reallocDataBuffer();
}
}
```
The offset width of `BaseVariableWidthVector` is 4, while the maximum memory
allocation is Long.MAX_VALUE. This makes the memory allocation check invalid.
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