Examples of org.apache.hadoop.hive.ql.optimizer.correlation.ReduceSinkDeDuplication$ReducerReducerProc

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

Examples of org.apache.hadoop.hive.ql.optimizer.correlation.ReduceSinkDeDuplication$ReducerReducerProc

org.apache.hadoop.hive.ql.optimizer.correlation.ReduceSinkDeDuplication
If two reducer sink operators share the same partition/sort columns and order, they can be merged. This should happen after map join optimization because map join optimization will remove reduce sink operators. This optimizer removes/replaces child-RS (not parent) which is safer way for DefaultGraphWalker.

        HiveConf.getBoolVar(hiveConf, HiveConf.ConfVars.HIVEOPTSORTDYNAMICPARTITION) &&
        !HiveConf.getBoolVar(hiveConf, HiveConf.ConfVars.HIVEOPTLISTBUCKETING)) {
      transformations.add(new SortedDynPartitionOptimizer());
    }
    if(HiveConf.getBoolVar(hiveConf, HiveConf.ConfVars.HIVEOPTREDUCEDEDUPLICATION)) {
      transformations.add(new ReduceSinkDeDuplication());
    }
    transformations.add(new NonBlockingOpDeDupProc());
    if (HiveConf.getBoolVar(hiveConf, HiveConf.ConfVars.HIVELIMITOPTENABLE)) {
      transformations.add(new GlobalLimitOptimizer());
    }

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        HiveConf.getBoolVar(hiveConf, HiveConf.ConfVars.HIVEOPTSORTDYNAMICPARTITION) &&
        !HiveConf.getBoolVar(hiveConf, HiveConf.ConfVars.HIVEOPTLISTBUCKETING)) {
      transformations.add(new SortedDynPartitionOptimizer());
    }
    if(HiveConf.getBoolVar(hiveConf, HiveConf.ConfVars.HIVEOPTREDUCEDEDUPLICATION)) {
      transformations.add(new ReduceSinkDeDuplication());
    }
    transformations.add(new NonBlockingOpDeDupProc());
    if (HiveConf.getBoolVar(hiveConf, HiveConf.ConfVars.HIVELIMITOPTENABLE)) {
      transformations.add(new GlobalLimitOptimizer());
    }

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    }


    transformations.add(new UnionProcessor());
    transformations.add(new JoinReorder());
    if(HiveConf.getBoolVar(hiveConf, HiveConf.ConfVars.HIVEOPTREDUCEDEDUPLICATION)) {
      transformations.add(new ReduceSinkDeDuplication());
    }
    transformations.add(new NonBlockingOpDeDupProc());
    if (HiveConf.getBoolVar(hiveConf, HiveConf.ConfVars.HIVELIMITOPTENABLE)) {
      transformations.add(new GlobalLimitOptimizer());
    }

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Related Classes of org.apache.hadoop.hive.ql.optimizer.correlation.ReduceSinkDeDuplication$ReducerReducerProc

org.apache.hadoop.hive.ql.exec.ColumnInfo

org.apache.hadoop.hive.ql.exec.GroupByOperator

org.apache.hadoop.hive.ql.exec.JoinOperator

org.apache.hadoop.hive.ql.exec.ReduceSinkOperator

org.apache.hadoop.hive.ql.exec.RowSchema

org.apache.hadoop.hive.ql.exec.SelectOperator

org.apache.hadoop.hive.ql.lib.DefaultGraphWalker

org.apache.hadoop.hive.ql.lib.DefaultRuleDispatcher

org.apache.hadoop.hive.ql.lib.Dispatcher

org.apache.hadoop.hive.ql.lib.GraphWalker

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