apache / apache/arrow-java

IndexOutOfBoundsException when loading compressed IPC format

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Type: bug
主要語言
Java
星號
94
分支
152
平均合併
3 天 16 小時
30 天內合併 PR
11

描述

I encountered this bug when I loaded a dataframe stored in the Arrow IPC format.

 
```java

// Java Code from "Apache Arrow Java Cookbook"
File file = new File("example.arrow");
try (
        BufferAllocator rootAllocator = new RootAllocator();
        FileInputStream fileInputStream = new FileInputStream(file);
        ArrowFileReader reader = new ArrowFileReader(fileInputStream.getChannel(), rootAllocator)
) {
    System.out.println("Record batches in file: " + reader.getRecordBlocks().size());
    for (ArrowBlock arrowBlock : reader.getRecordBlocks()) {
        reader.loadRecordBatch(arrowBlock);
        VectorSchemaRoot vectorSchemaRootRecover = reader.getVectorSchemaRoot();
        System.out.print(vectorSchemaRootRecover.contentToTSVString());
    }
} catch (IOException e) {
    e.printStackTrace();
}
```
Call stack:
```

Exception in thread "main" java.lang.IndexOutOfBoundsException: index: 0, length: 2048 (expected: range(0, 2024))
    at org.apache.arrow.memory.ArrowBuf.checkIndex(ArrowBuf.java:701)
    at org.apache.arrow.memory.ArrowBuf.setBytes(ArrowBuf.java:955)
    at org.apache.arrow.vector.BaseFixedWidthVector.reAlloc(BaseFixedWidthVector.java:451)
    at org.apache.arrow.vector.BaseFixedWidthVector.setValueCount(BaseFixedWidthVector.java:732)
    at org.apache.arrow.vector.VectorSchemaRoot.setRowCount(VectorSchemaRoot.java:240)
    at org.apache.arrow.vector.VectorLoader.load(VectorLoader.java:86)
    at org.apache.arrow.vector.ipc.ArrowReader.loadRecordBatch(ArrowReader.java:220)
    at org.apache.arrow.vector.ipc.ArrowFileReader.loadNextBatch(ArrowFileReader.java:166)
    at org.apache.arrow.vector.ipc.ArrowFileReader.loadRecordBatch(ArrowFileReader.java:197)
```
This bug can be reproduced by a simple dataframe created by pandas:

 
```java

pd.DataFrame({'a': range(10000)}).to_feather('example.arrow')
```
Pandas compresses the dataframe by default. If the compression is turned off, Java can load the dataframe. Thus, I guess the bounds checking code is buggy when loading compressed file.

 

That dataframe can be loaded in polars, pandas and pyarrow, so it's unlikely to be a pandas bug.

 

 

**Environment**: Linux and Windows.
Apache Arrow Java version: 10.0.0, 9.0.0, 4.0.1.
Pandas 1.4.2 using pyarrow 8.0.0 (anaconda3-2022.05)
**Reporter**: [Georeth Zhou](https://issues.apache.org/jira/browse/ARROW-18198)

**Note**: *This issue was originally created as [ARROW-18198](https://issues.apache.org/jira/browse/ARROW-18198). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*

貢獻指南

開啟貢獻指南

研究方向

從 ArrowReader.loadRecordBatch 開始,沿著 VectorLoader、VectorSchemaRoot.setRowCount 和 BaseFixedWidthVector.reAlloc 追蹤呼叫堆疊。使用提供的 pandas 壓縮 Feather 範例重現問題,將其與未壓縮檔案進行比較,並確認載入壓縮 dataframe 時不會出現 IndexOutOfBoundsException 且能夠完成。

由索引模型根據 Issue 內容生成。

評估

技術堆疊
java, pandas
領域
data
Issue 類型
缺陷
難度
4/5
預估耗時
3-5 天
活躍度
停滯
描述清晰度
基本清楚
新手友好度
35/100

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