Beispiel #1
0
  public void testScannerReseekDoesntNPE() throws Exception {
    List<KeyValueScanner> scanners = scanFixture(kvs);
    StoreScanner scan =
        new StoreScanner(new Scan(), scanInfo, scanType, getCols("a", "d"), scanners);

    // Previously a updateReaders twice in a row would cause an NPE.  In test this would also
    // normally cause an NPE because scan.store is null.  So as long as we get through these
    // two calls we are good and the bug was quashed.

    scan.updateReaders();

    scan.updateReaders();

    scan.peek();
  }
Beispiel #2
0
  public void testWideScanBatching() throws IOException {
    final int batch = 256;
    try {
      this.r = createNewHRegion(TESTTABLEDESC, null, null);
      int inserted = addWideContent(this.r);
      List<Cell> results = new ArrayList<Cell>();
      Scan scan = new Scan();
      scan.addFamily(A);
      scan.addFamily(B);
      scan.addFamily(C);
      scan.setMaxVersions(100);
      scan.setBatch(batch);
      InternalScanner s = r.getScanner(scan);
      int total = 0;
      int i = 0;
      boolean more;
      do {
        more = s.next(results);
        i++;
        LOG.info("iteration #" + i + ", results.size=" + results.size());

        // assert that the result set is no larger
        assertTrue(results.size() <= batch);

        total += results.size();

        if (results.size() > 0) {
          // assert that all results are from the same row
          byte[] row = CellUtil.cloneRow(results.get(0));
          for (Cell kv : results) {
            assertTrue(Bytes.equals(row, CellUtil.cloneRow(kv)));
          }
        }

        results.clear();

        // trigger ChangedReadersObservers
        Iterator<KeyValueScanner> scanners =
            ((HRegion.RegionScannerImpl) s).storeHeap.getHeap().iterator();
        while (scanners.hasNext()) {
          StoreScanner ss = (StoreScanner) scanners.next();
          ss.updateReaders();
        }
      } while (more);

      // assert that the scanner returned all values
      LOG.info("inserted " + inserted + ", scanned " + total);
      assertEquals(total, inserted);

      s.close();
    } finally {
      HRegion.closeHRegion(this.r);
    }
  }