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From chenerlu <...@git.apache.org>
Subject [GitHub] carbondata pull request #1094: [CARBONDATA-1181] Show partitions
Date Sun, 25 Jun 2017 08:15:53 GMT
Github user chenerlu commented on a diff in the pull request:

    https://github.com/apache/carbondata/pull/1094#discussion_r123893089
  
    --- Diff: examples/spark/src/main/scala/org/apache/carbondata/examples/CarbonPartitionExample.scala
---
    @@ -0,0 +1,128 @@
    +/*
    + * 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 scala.collection.mutable.LinkedHashMap
    +
    +import org.apache.spark.sql.AnalysisException
    +
    +import org.apache.carbondata.core.constants.CarbonCommonConstants
    +import org.apache.carbondata.core.util.CarbonProperties
    +import org.apache.carbondata.examples.util.ExampleUtils
    +
    +object CarbonPartitionExample {
    +  def main(args: Array[String]) {
    +    CarbonPartitionExample.extracted("t3", args)
    +  }
    +  def extracted(tableName: String, args: Array[String]): Unit = {
    +    val cc = ExampleUtils.createCarbonContext("CarbonPartitionExample")
    +    val testData = ExampleUtils.currentPath + "/src/main/resources/data.csv"
    +    CarbonProperties.getInstance()
    +      .addProperty(CarbonCommonConstants.CARBON_TIMESTAMP_FORMAT, "yyyy/MM/dd")
    +
    +    // none partition table
    +    cc.sql("DROP TABLE IF EXISTS t0")
    +    cc.sql("""
    +                | CREATE TABLE IF NOT EXISTS t0
    +                | (
    +                | vin String,
    +                | logdate Timestamp,
    +                | phonenumber Int,
    +                | country String,
    +                | area String
    +                | )
    +                | STORED BY 'carbondata'
    +              """.stripMargin)
    +    try {
    +      cc.sql("""SHOW PARTITIONS t0""").show()
    +    } catch {
    +      case ex: AnalysisException => print(ex.getMessage())
    +    }
    +
    +    // range partition
    +    cc.sql("DROP TABLE IF EXISTS t1")
    +    cc.sql("""
    +                | CREATE TABLE IF NOT EXISTS t1(
    +                | vin STRING,
    +                | phonenumber INT,
    +                | country STRING,
    +                | area STRING
    +                | )
    +                | PARTITIONED BY (logdate TIMESTAMP)
    +                | STORED BY 'carbondata'
    +                | TBLPROPERTIES('PARTITION_TYPE'='RANGE',
    +                | 'RANGE_INFO'='2014/01/01,2015/01/01,2016/01/01')
    +              """.stripMargin)
    +    cc.sql("""SHOW PARTITIONS t1""").show()
    +
    +    // hash partition
    +    cc.sql("""
    +                | CREATE TABLE IF NOT EXISTS t3(
    +                | logdate Timestamp,
    +                | phonenumber Int,
    +                | country String,
    +                | area String
    +                | )
    +                | PARTITIONED BY (vin String)
    +                | STORED BY 'carbondata'
    +                | TBLPROPERTIES('PARTITION_TYPE'='HASH','NUM_PARTITIONS'='5')
    +                """.stripMargin)
    +    cc.sql("""SHOW PARTITIONS t3""").show()
    +
    +    // list partition
    +    cc.sql("DROP TABLE IF EXISTS t5")
    +    cc.sql("""
    +               | CREATE TABLE IF NOT EXISTS t5(
    +               | vin String,
    +               | logdate Timestamp,
    +               | phonenumber Int,
    +               | area String
    +               | )
    +               | PARTITIONED BY (country string)
    +               | STORED BY 'carbondata'
    +               | TBLPROPERTIES('PARTITION_TYPE'='LIST',
    +               | 'LIST_INFO'='(China,United States),UK ,japan,(Canada,Russia), South
Korea ')
    +       """.stripMargin)
    +    cc.sql("""SHOW PARTITIONS t5""").show()
    +
    +    cc.sql(s"DROP TABLE IF EXISTS partitionDB.$tableName")
    --- End diff --
    
    I think $tableName is not proper.


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