[HADOOP-14072] AliyunOSS: Failed to read from stream when seek beyond the download size

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha2
• Fix Version/s: 3.0.0-alpha4, 2.9.1
• Component/s: fs/oss
• Hadoop Flags: Reviewed
• Assignee: Genmao Yu
• Reporter: Genmao Yu
• Created: 10/Feb/17 13:21
• Updated: 24/Nov/17 08:42
• Resolved: 15/Feb/17 08:35

Description

public synchronized void seek(long pos) throws IOException {
    checkNotClosed();
    if (position == pos) {
      return;
    } else if (pos > position && pos < position + partRemaining) {
      AliyunOSSUtils.skipFully(wrappedStream, pos - position);
      position = pos;
    } else {
      reopen(pos);
    }
  }

In seek function, we need to update the partRemaining when the seeking position is located in downloaded part.