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From jarray888 <...@git.apache.org>
Subject [GitHub] incubator-carbondata pull request #624: [CARBONDATA-747][WIP] Add simple per...
Date Mon, 06 Mar 2017 09:19:45 GMT
Github user jarray888 commented on a diff in the pull request:

    https://github.com/apache/incubator-carbondata/pull/624#discussion_r104370904
  
    --- Diff: examples/spark2/src/main/scala/org/apache/carbondata/examples/CompareTest.scala
---
    @@ -0,0 +1,122 @@
    +/*
    + * 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.examples
    +
    +import org.apache.spark.sql.{DataFrame, Row, SaveMode, SparkSession}
    +
    +import org.apache.carbondata.core.util.CarbonProperties
    +
    +// scalastyle:off println
    +object CompareTest {
    +
    +  val parquetTableName = "comparetest_parquet"
    +  val carbonTableName = "comparetest_carbon"
    +
    +  private def generateDataFrame(spark: SparkSession): DataFrame = {
    +    import spark.implicits._
    +    spark.sparkContext.parallelize(1 to 10 * 1000 * 1000, 4)
    +        .map(x => ("i" + x, "p" + x % 10, "j" + x % 100, x, x + 1, (x + 7) % 21, (x
+ 5) / 43, x
    --- End diff --
    
    To simulate a real-life data, please make the data unsorted, like
    `map(x => ("i" + randon number, "p" + x % 13, "j" + x % 97, ...)`


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