[HBASE-12817] Data missing while scanning using PREFIX_TREE data block encoding

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.98.9
• Fix Version/s: 1.0.0, 0.98.10, 1.1.0
• Component/s: Scanners
• Hadoop Flags: Reviewed
• Assignee: Duo Zhang
• Reporter: Duo Zhang
• Created: 07/Jan/15 10:47
• Updated: 06/Apr/18 17:54
• Resolved: 08/Jan/15 03:36

Description

write a testcase like this

  @Test
  public void test() throws IOException {
    for (int i = 0; i < 100; i++) {
      region.put(new Put(Bytes.toBytes("obj" + (2900 + i))).add(fam, qual1, Bytes.toBytes(i)));
    }
    region.put(new Put(Bytes.toBytes("obj299")).add(fam, qual1, Bytes.toBytes("whatever")));
    region.put(new Put(Bytes.toBytes("obj29")).add(fam, qual1, Bytes.toBytes("whatever")));
    region.put(new Put(Bytes.toBytes("obj2")).add(fam, qual1, Bytes.toBytes("whatever")));
    region.put(new Put(Bytes.toBytes("obj3")).add(fam, qual1, Bytes.toBytes("whatever")));
    region.flushcache(true);
    Scan scan = new Scan(Bytes.toBytes("obj29995"));
    RegionScanner scanner = region.getScanner(scan);
    List<Cell> cells = new ArrayList<Cell>();
    assertFalse(scanner.next(cells));
    assertArrayEquals(Bytes.toBytes("obj3"), Result.create(cells).getRow());
  }

use obj29995 to scan should return obj3, but obj2990 is returned.

Seems a bug introduced by the fix of HBASE-11728.