Package org.apache.hadoop.hive.ql.optimizer.GenMRProcContext

Examples of org.apache.hadoop.hive.ql.optimizer.GenMRProcContext.GenMRUnionCtx

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    Task<? extends Serializable> uTask = null;
    MapredWork uPlan = null;

    // union is encountered for the first time
    GenMRUnionCtx uCtxTask = ctx.getUnionTask(union);
    if (uCtxTask == null) {
      uCtxTask = new GenMRUnionCtx();
      uPlan = GenMapRedUtils.getMapRedWork(parseCtx);
      uTask = TaskFactory.get(uPlan, parseCtx.getConf());
      uCtxTask.setUTask(uTask);
      ctx.setUnionTask(union, uCtxTask);
    }
    else {
      uTask = uCtxTask.getUTask();
    }

    // Copy into the current union task plan if
    if (uPrsCtx.getMapOnlySubq(pos) && uPrsCtx.getRootTask(pos)) {
      processSubQueryUnionMerge(ctx, uCtxTask, union, stack);
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    MapredWork plan = (MapredWork) currTask.getWork();

    // In case of lateral views followed by a join, the same tree
    // can be traversed more than one
    if (currUnionOp != null) {
      GenMRUnionCtx uCtx = opProcCtx.getUnionTask(currUnionOp);
      assert uCtx != null;
      setUnionPlan(opProcCtx, local, plan, uCtx, false);
    }
  }
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      Task<? extends Serializable> currentUnionTask,
      Task<? extends Serializable> existingTask, boolean local)
      throws SemanticException {
    MapredWork plan = (MapredWork) existingTask.getWork();
    assert currUnionOp != null;
    GenMRUnionCtx uCtx = opProcCtx.getUnionTask(currUnionOp);
    assert uCtx != null;

    setUnionPlan(opProcCtx, local, plan, uCtx, true);

    List<Task<? extends Serializable>> parTasks = null;
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  public static void initUnionPlan(GenMRProcContext opProcCtx,
      Task<? extends Serializable> currTask, boolean local) {
    MapredWork plan = (MapredWork) currTask.getWork();
    UnionOperator currUnionOp = opProcCtx.getCurrUnionOp();
    assert currUnionOp != null;
    GenMRUnionCtx uCtx = opProcCtx.getUnionTask(currUnionOp);
    assert uCtx != null;

    List<String> taskTmpDirLst = uCtx.getTaskTmpDir();
    List<TableDesc> tt_descLst = uCtx.getTTDesc();
    assert !taskTmpDirLst.isEmpty() && !tt_descLst.isEmpty();
    assert taskTmpDirLst.size() == tt_descLst.size();
    int size = taskTmpDirLst.size();
    assert local == false;
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    UnionParseContext uPrsCtx = uCtx.getUnionParseContext(union);
    assert uPrsCtx != null;

    Task<? extends Serializable> currTask = ctx.getCurrTask();

    GenMRUnionCtx uCtxTask = ctx.getUnionTask(union);
    Task<? extends Serializable> uTask = null;

    union.getParentOperators().get(pos);
    MapredWork uPlan = null;

    // union is encountered for the first time
    if (uCtxTask == null) {
      uCtxTask = new GenMRUnionCtx();
      uPlan = GenMapRedUtils.getMapRedWork(parseCtx.getConf());
      uTask = TaskFactory.get(uPlan, parseCtx.getConf());
      uCtxTask.setUTask(uTask);
      ctx.setUnionTask(union, uCtxTask);
    } else {
      uTask = uCtxTask.getUTask();
      uPlan = (MapredWork) uTask.getWork();
    }

    // If there is a mapjoin at position 'pos'
    if (uPrsCtx.getMapJoinSubq(pos)) {
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Related Classes of org.apache.hadoop.hive.ql.optimizer.GenMRProcContext.GenMRUnionCtx

  • org.apache.hadoop.hive.ql.optimizer.GenMapRedUtils
  • org.apache.hadoop.hive.ql.optimizer.GenMRUnion1
  • org.apache.hadoop.hive.ql.optimizer.MapJoinFactory$UnionMapJoin
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