[HBASE-15884] NPE in StoreFileScanner#skipKVsNewerThanReadpoint during reverse scan

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.1, 2.0.0
• Fix Version/s: 1.3.0, 2.0.0
• Component/s: Scanners
• Hadoop Flags: Reviewed
• Assignee: Sergey Soldatov
• Reporter: Sergey Soldatov
• Created: 24/May/16 09:15
• Updated: 09/Nov/17 00:59
• Resolved: 26/May/16 14:26

Description

Here is a part of skipKVsNewerThanReadpoint method:

      hfs.next();
      setCurrentCell(hfs.getKeyValue());
      if (this.stopSkippingKVsIfNextRow
          && getComparator().compareRows(cur.getRowArray(), cur.getRowOffset(),
              cur.getRowLength(), startKV.getRowArray(), startKV.getRowOffset(),
              startKV.getRowLength()) > 0) {

If hfs has no more KVs, cur will be set to Null and on on the next step will throw NPE.