List of coprocessorExec() Examples

Examples of coprocessorExec()

org.apache.hadoop.hbase.client.HTable.coprocessorExec()
{@inheritDoc}
org.apache.hadoop.hbase.client.HTableInterface.coprocessorExec()
Invoke the passed {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call} againstthe {@link CoprocessorProtocol} instances running in the selected regions.All regions beginning with the region containing the startKey row, through to the region containing the endKey row (inclusive) will be used. If startKey or endKey is null, the first and last regions in the table, respectively, will be used in the range selection. @param protocol the CoprocessorProtocol implementation to call @param startKey start region selection with region containing this row @param endKey select regions up to and including the region containingthis row @param callable wraps the CoprocessorProtocol implementation method callsmade per-region @param < T> CoprocessorProtocol subclass for the remote invocation @param < R> Return type for the{@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call(Object)}method @return a Map of region names to{@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call(Object)} return values

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

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

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

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

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

    verifyRegionResults(table, results, ROW_A);
    verifyRegionResults(table, results, ROW_B);
    verifyRegionResults(table, results, ROW_C);


    // test start row + empty end
    results = table.coprocessorExec(PingProtocol.class, ROW_BC, null,
        new Batch.Call<PingProtocol,String>() {
          public String call(PingProtocol instance) {
            return instance.ping();
          }
        });

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

        results.get(loc.getRegionInfo().getRegionName()));
    verifyRegionResults(table, results, ROW_B);
    verifyRegionResults(table, results, ROW_C);


    // test empty start + end
    results = table.coprocessorExec(PingProtocol.class, null, ROW_BC,
        new Batch.Call<PingProtocol,String>() {
          public String call(PingProtocol instance) {
            return instance.ping();
          }
        });

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

    loc = table.getRegionLocation(ROW_C);
    assertNull("Should be missing region for row ccc (past stop row)",
        results.get(loc.getRegionInfo().getRegionName()));


    // test explicit start + end
    results = table.coprocessorExec(PingProtocol.class, ROW_AB, ROW_BC,
        new Batch.Call<PingProtocol,String>() {
          public String call(PingProtocol instance) {
            return instance.ping();
          }
        });

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

    loc = table.getRegionLocation(ROW_C);
    assertNull("Should be missing region for row ccc (past stop row)",
        results.get(loc.getRegionInfo().getRegionName()));


    // test single region
    results = table.coprocessorExec(PingProtocol.class, ROW_B, ROW_BC,
        new Batch.Call<PingProtocol,String>() {
          public String call(PingProtocol instance) {
            return instance.ping();
          }
        });

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


  @Test
  public void testCompountCall() throws Throwable {
    HTable table = new HTable(util.getConfiguration(), TEST_TABLE);


    Map<byte[],String> results = table.coprocessorExec(PingProtocol.class,
        ROW_A, ROW_C,
        new Batch.Call<PingProtocol,String>() {
          public String call(PingProtocol instance) {
            return instance.hello(instance.ping());
          }

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


  @Test
  public void testNullCall() throws Throwable {
    HTable table = new HTable(util.getConfiguration(), TEST_TABLE);


    Map<byte[],String> results = table.coprocessorExec(PingProtocol.class,
        ROW_A, ROW_C,
        new Batch.Call<PingProtocol,String>() {
          public String call(PingProtocol instance) {
            return instance.hello(null);
          }

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