Package org.apache.hadoop.hbase.client

Examples of org.apache.hadoop.hbase.client.HTable.coprocessorExec()

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  public void testAggregation() throws Throwable {
    HTable table = new HTable(util.getConfiguration(), TEST_TABLE);
    Map<byte[], Long> results;

    // scan: for all regions
    results = table
        .coprocessorExec(ColumnAggregationProtocol.class,
                         ROWS[rowSeperator1 - 1], ROWS[rowSeperator2 + 1],
                         new Batch.Call<ColumnAggregationProtocol, Long>() {
                           public Long call(ColumnAggregationProtocol instance)
                               throws IOException {
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    assertEquals("Invalid result", sumResult, expectedResult);

    results.clear();

    // scan: for region 2 and region 3
    results = table
        .coprocessorExec(ColumnAggregationProtocol.class,
                         ROWS[rowSeperator1 + 1], ROWS[rowSeperator2 + 1],
                         new Batch.Call<ColumnAggregationProtocol, Long>() {
                           public Long call(ColumnAggregationProtocol instance)
                               throws IOException {
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    HTable table = new HTable(util.getConfiguration(), TEST_TABLE);
    Scan scan;
    Map<byte[], Long> results;

    // scan: for all regions
    results = table
        .coprocessorExec(ColumnAggregationProtocol.class,
                         ROWS[rowSeperator1 - 1], ROWS[rowSeperator2 + 1],
                         new Batch.Call<ColumnAggregationProtocol, Long>() {
                           public Long call(ColumnAggregationProtocol instance)
                               throws IOException {
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    assertEquals("Invalid result", sumResult, expectedResult);

    results.clear();

    // scan: for region 2 and region 3
    results = table
        .coprocessorExec(ColumnAggregationProtocol.class,
                         ROWS[rowSeperator1 + 1], ROWS[rowSeperator2 + 1],
                         new Batch.Call<ColumnAggregationProtocol, Long>() {
                           public Long call(ColumnAggregationProtocol instance)
                               throws IOException {
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      public synchronized void update(byte[] region, byte[] row, R result) {
        max = (max == null || (result != null && ci.compare(max, result) < 0)) ? result : max;
      }
    }
    MaxCallBack aMaxCallBack = new MaxCallBack();
    table.coprocessorExec(AggregateProtocol.class, scan.getStartRow(), scan
        .getStopRow(), new Batch.Call<AggregateProtocol, R>() {
      @Override
      public R call(AggregateProtocol instance) throws IOException {
        return instance.getMax(ci, scan);
      }
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        min = (min == null || (result != null && ci.compare(result, min) < 0)) ? result : min;
      }
    }
    HTable table = new HTable(conf, tableName);
    MinCallBack minCallBack = new MinCallBack();
    table.coprocessorExec(AggregateProtocol.class, scan.getStartRow(), scan
        .getStopRow(), new Batch.Call<AggregateProtocol, R>() {

      @Override
      public R call(AggregateProtocol instance) throws IOException {
        return instance.getMin(ci, scan);
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        rowCountL.addAndGet(result.longValue());
      }
    }
    RowNumCallback rowNum = new RowNumCallback();
    HTable table = new HTable(conf, tableName);
    table.coprocessorExec(AggregateProtocol.class, scan.getStartRow(), scan
        .getStopRow(), new Batch.Call<AggregateProtocol, Long>() {
      @Override
      public Long call(AggregateProtocol instance) throws IOException {
        return instance.getRowNum(ci, scan);
      }
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        sumVal = ci.add(sumVal, result);
      }
    }
    SumCallBack sumCallBack = new SumCallBack();
    HTable table = new HTable(conf, tableName);
    table.coprocessorExec(AggregateProtocol.class, scan.getStartRow(), scan
        .getStopRow(), new Batch.Call<AggregateProtocol, S>() {
      @Override
      public S call(AggregateProtocol instance) throws IOException {
        return instance.getSum(ci, scan);
      }
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        rowCount += result.getSecond();
      }
    }
    AvgCallBack avgCallBack = new AvgCallBack();
    HTable table = new HTable(conf, tableName);
    table.coprocessorExec(AggregateProtocol.class, scan.getStartRow(), scan
        .getStopRow(), new Batch.Call<AggregateProtocol, Pair<S, Long>>() {
      @Override
      public Pair<S, Long> call(AggregateProtocol instance) throws IOException {
        return instance.getAvg(ci, scan);
      }
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        rowCountVal += result.getSecond();
      }
    }
    StdCallback stdCallback = new StdCallback();
    HTable table = new HTable(conf, tableName);
    table.coprocessorExec(AggregateProtocol.class, scan.getStartRow(), scan
        .getStopRow(),
        new Batch.Call<AggregateProtocol, Pair<List<S>, Long>>() {
          @Override
          public Pair<List<S>, Long> call(AggregateProtocol instance)
              throws IOException {
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