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From jackylk <...@git.apache.org>
Subject [GitHub] carbondata pull request #958: [CARBONDATA-1088] Added interfaces for Data Ma...
Date Mon, 12 Jun 2017 09:43:09 GMT
Github user jackylk commented on a diff in the pull request:

    https://github.com/apache/carbondata/pull/958#discussion_r121349952
  
    --- Diff: hadoop/src/main/java/org/apache/carbondata/hadoop/internal/pruning/impl/BlockPruner.java
---
    @@ -0,0 +1,61 @@
    +/*
    + * 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.carbondata.hadoop.internal.pruning.impl;
    +
    +import java.util.Iterator;
    +import java.util.List;
    +
    +import org.apache.carbondata.core.constants.CarbonCommonConstants;
    +import org.apache.carbondata.core.datastore.filesystem.CarbonFile;
    +import org.apache.carbondata.core.datastore.filesystem.CarbonFileFilter;
    +import org.apache.carbondata.core.datastore.impl.FileFactory;
    +import org.apache.carbondata.core.indexstore.DataMap;
    +import org.apache.carbondata.core.indexstore.DataMapStore;
    +import org.apache.carbondata.core.indexstore.DataMapType;
    +import org.apache.carbondata.core.metadata.AbsoluteTableIdentifier;
    +import org.apache.carbondata.core.scan.filter.resolver.FilterResolverIntf;
    +import org.apache.carbondata.hadoop.internal.pruning.Pruner;
    +
    +import org.apache.hadoop.mapreduce.lib.input.FileSplit;
    +
    +/**
    + * Block pruner
    + */
    +public class BlockPruner implements Pruner {
    +
    +  @Override
    +  public List<FileSplit> pruneSplits(List<FileSplit> splits, AbsoluteTableIdentifier
identifier,
    +      String segmentId, FilterResolverIntf filterResolverIntf) {
    +    String path = identifier.getTablePath() + CarbonCommonConstants.FILE_SEPARATOR +
"Part0"
    +        + CarbonCommonConstants.FILE_SEPARATOR + "Segment_" + segmentId;
    --- End diff --
    
    better to combine CarbonCommonConstants.FILE_SEPARATOR + "Part0" + CarbonCommonConstants.FILE_SEPARATOR
into one string


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