[SPARK-21312] UnsafeRow writeToStream has incorrect offsetInByteArray calculation for non-zero offset

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0, 2.1.0
• Fix Version/s: 2.1.2, 2.2.1, 2.3.0
• Component/s: SQL
• Assignee: Sumedh Wale
• Reporter: Sumedh Wale
• Created: 05/Jul/17 06:51
• Updated: 06/Jul/17 06:50
• Resolved: 06/Jul/17 06:48

Description

The following code in UnsafeRow has an incorrect offset calculation:

  public void writeToStream(OutputStream out, byte[] writeBuffer) throws IOException {
    if (baseObject instanceof byte[]) {
      int offsetInByteArray = (int) (Platform.BYTE_ARRAY_OFFSET - baseOffset);

which should be:

      int offsetInByteArray = (int) (baseOffset - Platform.BYTE_ARRAY_OFFSET);

Issue Links

• links to: [Github] Pull Request #18535 (sumwale)