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From hnfgns <...@git.apache.org>
Subject [GitHub] drill pull request: DRILL-4132 Ability to submit simple type of ph...
Date Wed, 27 Apr 2016 22:15:16 GMT
Github user hnfgns commented on a diff in the pull request:

    https://github.com/apache/drill/pull/368#discussion_r61346266
  
    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/planner/fragment/contrib/ExchangeRemoverMaterializer.java
---
    @@ -0,0 +1,96 @@
    +/**
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + * http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +package org.apache.drill.exec.planner.fragment.contrib;
    +
    +import java.util.List;
    +
    +import org.apache.drill.common.exceptions.ExecutionSetupException;
    +import org.apache.drill.exec.exception.FragmentSetupException;
    +import org.apache.drill.exec.physical.PhysicalOperatorSetupException;
    +import org.apache.drill.exec.physical.base.AbstractPhysicalVisitor;
    +import org.apache.drill.exec.physical.base.Exchange;
    +import org.apache.drill.exec.physical.base.GroupScan;
    +import org.apache.drill.exec.physical.base.PhysicalOperator;
    +import org.apache.drill.exec.physical.base.Store;
    +import org.apache.drill.exec.physical.base.SubScan;
    +import org.apache.drill.exec.planner.fragment.Materializer;
    +import org.apache.drill.exec.planner.fragment.Materializer.IndexedFragmentNode;
    +
    +import com.google.common.collect.Lists;
    +
    +/**
    + * Materializer visitor to remove exchange(s)
    + * NOTE: this Visitor does NOT set OperatorId, as after Exchange removal all operators
need renumbering
    + * Use OperatorIdVisitor on top to set correct OperatorId
    + */
    +public class ExchangeRemoverMaterializer extends AbstractPhysicalVisitor<PhysicalOperator,
Materializer.IndexedFragmentNode, ExecutionSetupException> {
    +
    +  static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ExchangeRemoverMaterializer.class);
    --- End diff --
    
    private


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