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From hnfgns <...@git.apache.org>
Subject [GitHub] drill pull request: DRILL-4132 Ability to submit simple type of ph...
Date Thu, 28 Apr 2016 19:48:19 GMT
Github user hnfgns commented on a diff in the pull request:

    https://github.com/apache/drill/pull/368#discussion_r61491072
  
    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/planner/fragment/contrib/SimpleParallelizerMultiPlans.java
---
    @@ -0,0 +1,228 @@
    +/**
    + * 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.Collection;
    +import java.util.Iterator;
    +import java.util.List;
    +
    +import org.apache.drill.common.exceptions.ExecutionSetupException;
    +import org.apache.drill.common.util.DrillStringUtils;
    +import org.apache.drill.exec.ops.QueryContext;
    +import org.apache.drill.exec.physical.base.Exchange;
    +import org.apache.drill.exec.physical.base.FragmentRoot;
    +import org.apache.drill.exec.physical.base.PhysicalOperator;
    +import org.apache.drill.exec.planner.PhysicalPlanReader;
    +import org.apache.drill.exec.planner.fragment.Fragment;
    +import org.apache.drill.exec.planner.fragment.PlanningSet;
    +import org.apache.drill.exec.planner.fragment.SimpleParallelizer;
    +import org.apache.drill.exec.planner.fragment.Wrapper;
    +import org.apache.drill.exec.planner.fragment.Materializer.IndexedFragmentNode;
    +import org.apache.drill.exec.proto.BitControl.PlanFragment;
    +import org.apache.drill.exec.proto.BitControl.QueryContextInformation;
    +import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint;
    +import org.apache.drill.exec.proto.ExecProtos.FragmentHandle;
    +import org.apache.drill.exec.proto.UserBitShared.QueryId;
    +import org.apache.drill.exec.rpc.user.UserSession;
    +import org.apache.drill.exec.server.options.OptionList;
    +import org.apache.drill.exec.work.QueryWorkUnit;
    +import org.apache.drill.exec.work.foreman.ForemanSetupException;
    +
    +import com.fasterxml.jackson.core.JsonProcessingException;
    +import com.google.common.base.Preconditions;
    +import com.google.common.collect.Lists;
    +
    +/**
    + * SimpleParallelizerMultiPlans class is an extension to SimpleParallelizer
    + * to help with getting PlanFragments for split plan.
    + * Split plan is essentially ability to create multiple Physical Operator plans from
original Physical Operator plan
    + * to be able to run plans separately.
    + * Moving functionality specific to splitting the plan to this class
    + * allows not to pollute parent class with non-authentic functionality
    + *
    + */
    +public class SimpleParallelizerMultiPlans extends SimpleParallelizer {
    --- End diff --
    
    Name advise: SplittingParallelizer + documentation seems pretty good here.


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