[HADOOP-10542] Potential null pointer dereference in Jets3tFileSystemStore#retrieveBlock()

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.7.0
• Component/s: fs/s3
• Target Version/s: 2.7.0
• Assignee: Ted Yu
• Reporter: Ted Yu
• Created: 27/Apr/14 15:27
• Updated: 04/Jan/16 23:32
• Resolved: 17/Jan/15 18:26

Description

      in = get(blockToKey(block), byteRangeStart);
      out = new BufferedOutputStream(new FileOutputStream(fileBlock));
      byte[] buf = new byte[bufferSize];
      int numRead;
      while ((numRead = in.read(buf)) >= 0) {

get() may return null.
The while loop dereferences in without null check.

Issue Links

• breaks: HADOOP-12689 S3 filesystem operations stopped working correctly