Examples of ExecutionBlock

org.apache.tajo.engine.planner.global.ExecutionBlock
A distributed execution plan (DEP) is a direct acyclic graph (DAG) of ExecutionBlocks. An ExecutionBlock is a basic execution unit that could be distributed across a number of nodes. An ExecutionBlock class contains input information (e.g., child execution blocks or input tables), and output information (e.g., partition type, partition key, and partition number). In addition, it includes a logical plan to be executed in each node.

Examples of org.apache.tajo.engine.planner.global.ExecutionBlock


    return hashed;
  }


  public static SubQuery setShuffleOutputNumForTwoPhase(SubQuery subQuery, final int desiredNum, DataChannel channel) {
    ExecutionBlock execBlock = subQuery.getBlock();
    Column[] keys;
    // if the next query is join,
    // set the partition number for the current logicalUnit
    // TODO: the union handling is required when a join has unions as its child
    MasterPlan masterPlan = subQuery.getMasterPlan();
    keys = channel.getShuffleKeys();
    if (!masterPlan.isRoot(subQuery.getBlock()) ) {
      ExecutionBlock parentBlock = masterPlan.getParent(subQuery.getBlock());
      if (parentBlock.getPlan().getType() == NodeType.JOIN) {
        channel.setShuffleOutputNum(desiredNum);
      }
    }


    // set the partition number for group by and sort

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Examples of org.apache.tajo.engine.planner.global.ExecutionBlock

    private boolean checkIfInterQuery(MasterPlan masterPlan, ExecutionBlock block) {
      if (masterPlan.isRoot(block)) {
        return false;
      }


      ExecutionBlock parent = masterPlan.getParent(block);
      if (masterPlan.isRoot(parent) && parent.hasUnion()) {
        return false;
      }


      return true;
    }

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Examples of org.apache.tajo.engine.planner.global.ExecutionBlock

    TajoResultSet ts = (TajoResultSet)res;
    assertResultSet(res);
    cleanupQuery(res);


    MasterPlan plan = getQueryPlan(ts.getQueryId());
    ExecutionBlock rootEB = plan.getRoot();


    /*
    |-eb_1395998037360_0001_000006
       |-eb_1395998037360_0001_000005
     */
    assertEquals(1, plan.getChildCount(rootEB.getId()));


    ExecutionBlock firstEB = plan.getChild(rootEB.getId(), 0);


    assertNotNull(firstEB);
    assertEquals(2, firstEB.getBroadcastTables().size());
    assertTrue(firstEB.getBroadcastTables().contains("default.supplier"));
    assertTrue(firstEB.getBroadcastTables().contains("default.part"));
  }

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Examples of org.apache.tajo.engine.planner.global.ExecutionBlock

    ResultSet res = executeQuery();
    assertResultSet(res);
    cleanupQuery(res);


    MasterPlan plan = getQueryPlan(((TajoResultSet)res).getQueryId());
    ExecutionBlock rootEB = plan.getRoot();


    /*
    |-eb_1395996354406_0001_000010
       |-eb_1395996354406_0001_000009
          |-eb_1395996354406_0001_000008
          |-eb_1395996354406_0001_000005
     */
    assertEquals(1, plan.getChildCount(rootEB.getId()));


    ExecutionBlock firstJoinEB = plan.getChild(rootEB.getId(), 0);
    assertNotNull(firstJoinEB);
    assertEquals(NodeType.JOIN, firstJoinEB.getPlan().getType());
    assertEquals(0, firstJoinEB.getBroadcastTables().size());


    ExecutionBlock leafEB1 = plan.getChild(firstJoinEB.getId(), 0);
    assertTrue(leafEB1.getBroadcastTables().contains("default.orders"));
    assertTrue(leafEB1.getBroadcastTables().contains("default.part"));


    ExecutionBlock leafEB2 = plan.getChild(firstJoinEB.getId(), 1);
    assertTrue(leafEB2.getBroadcastTables().contains("default.nation"));
  }

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