Java Code Examples for org.apache.hadoop.hbase.client.Scan.setSmall()

The following are Jave code examples for showing how to use setSmall() of the org.apache.hadoop.hbase.client.Scan class. You can vote up the examples you like. Your votes will be used in our system to get more good examples.
Example 1
Project: ditb   File: MDIndex.java   Source Code and License Vote up 6 votes
public Result getRowOrBefore(Table table, byte[] row, byte[] family) throws IOException {
  long start = System.currentTimeMillis();
  Scan scan = new Scan();
  scan.addFamily(family);
  scan.setReversed(true);
  scan.setStartRow(row);
  scan.setCacheBlocks(false);
  scan.setCaching(1);
  scan.setSmall(true);
  ResultScanner scanner = table.getScanner(scan);
  Result ret = scanner.next();
  scanner.close();
  prevRowTotalTime += System.currentTimeMillis() - start;
  prevRowTotalCount++;
  return ret;
}
 
Example 2
Project: ditb   File: PerfMD.java   Source Code and License Vote up 5 votes
@Override protected void insertOneRecord(AbstractDITBRecord record) throws IOException {
  // note, MD-HBase get before update, we summarize the time in get seperately
  MDPoint point = record.toMDPoint();
  byte[] row = MDUtils.bitwiseZip(point.values, mdAdmin.getDimensions());
  // get before row
  long startTime = System.currentTimeMillis();
  Scan scan = new Scan();
  scan.addFamily(MDHBaseAdmin.BUCKET_FAMILY);
  scan.setReversed(true);
  scan.setStartRow(row);
  scan.setCacheBlocks(false);
  scan.setCaching(1);
  scan.setSmall(true);
  ResultScanner scanner = table.getScanner(scan);
  Result result = scanner.next();
  scanner.close();
  gbuTime += System.currentTimeMillis() - startTime;
  gbuCount++;
  // default scan
  if (result == null) {
    row = mdAdmin.getBucketSuffixRow(point);
  } else {
    row = result.getRow();
  }
  table.incrementColumnValue(row, MDHBaseAdmin.BUCKET_FAMILY,
      MDHBaseAdmin.BUCKET_SIZE_QUALIFIER, 1);
}
 
Example 3
Project: ditb   File: PerfMD.java   Source Code and License Vote up 5 votes
@Override protected Result processGet(Table table, Get get) throws IOException {
  Scan scan = new Scan();
  scan.addFamily(MDHBaseAdmin.BUCKET_FAMILY);
  scan.setReversed(true);
  scan.setStartRow(get.getRow());
  scan.setCacheBlocks(false);
  scan.setCaching(1);
  scan.setSmall(true);
  ResultScanner scanner = table.getScanner(scan);
  Result ret = scanner.next();
  scanner.close();
  return ret;
}
 
Example 4
Project: ditb   File: TestPartialResultsFromClientSide.java   Source Code and License Vote up 5 votes
public void testSmallScansDoNotAllowPartials(Scan baseScan) throws Exception {
  Scan scan = new Scan(baseScan);
  scan.setAllowPartialResults(true);
  scan.setSmall(true);
  scan.setMaxResultSize(1);

  ResultScanner scanner = TABLE.getScanner(scan);
  Result r = null;

  while ((r = scanner.next()) != null) {
    assertFalse(r.isPartial());
  }

  scanner.close();
}