ajantha-bhat commented on a change in pull request #3773:
URL: https://github.com/apache/carbondata/pull/3773#discussion_r466311639



##########
File path: 
integration/presto/src/test/scala/org/apache/carbondata/presto/integrationtest/GenerateFiles.scala
##########
@@ -0,0 +1,667 @@
+/*
+ * 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.presto.integrationtest
+
+import java.io.{ByteArrayInputStream, ByteArrayOutputStream, DataInputStream, 
File, InputStream}
+import java.util
+
+import scala.collection.JavaConverters._
+
+import org.apache.avro
+import org.apache.avro.file.DataFileWriter
+import org.apache.avro.generic.{GenericDatumReader, GenericDatumWriter, 
GenericRecord}
+import org.apache.avro.io.{DecoderFactory, Encoder}
+import org.junit.Assert
+
+import org.apache.carbondata.core.cache.dictionary.DictionaryByteArrayWrapper
+import org.apache.carbondata.core.constants.CarbonCommonConstants
+import org.apache.carbondata.core.datastore.block.TableBlockInfo
+import org.apache.carbondata.core.datastore.chunk.impl.DimensionRawColumnChunk
+import 
org.apache.carbondata.core.datastore.chunk.reader.CarbonDataReaderFactory
+import 
org.apache.carbondata.core.datastore.chunk.reader.dimension.v3.DimensionChunkReaderV3
+import org.apache.carbondata.core.datastore.compression.CompressorFactory
+import org.apache.carbondata.core.datastore.filesystem.{CarbonFile, 
CarbonFileFilter}
+import org.apache.carbondata.core.datastore.impl.FileFactory
+import 
org.apache.carbondata.core.datastore.page.encoding.DefaultEncodingFactory
+import org.apache.carbondata.core.metadata.ColumnarFormatVersion
+import org.apache.carbondata.core.util.{CarbonMetadataUtil, 
DataFileFooterConverterV3}
+import org.apache.carbondata.sdk.file.CarbonWriter
+
+class GenerateFiles {
+
+  def singleLevelArrayFile() = {
+    val json1: String =
+      """ {"stringCol": "bob","intCol": 14,"doubleCol": 10.5,"realCol": 12.7,
+        |"boolCol": true,"arrayStringCol1":["Street1"],"arrayStringCol2": 
["India", "Egypt"],
+        |"arrayIntCol": 
[1,2,3],"arrayBigIntCol":[70000,600000000],"arrayRealCol":[1.111,2.2],
+        |"arrayDoubleCol":[1.1,2.2,3.3], "arrayBooleanCol": [true, false, 
true]} """.stripMargin
+    val json2: String =
+      """ {"stringCol": "Alex","intCol": 15,"doubleCol": 11.5,"realCol": 13.7,
+        |"boolCol": true, "arrayStringCol1": ["Street1", 
"Street2"],"arrayStringCol2": ["Japan",
+        |"China", "India"],"arrayIntCol": 
[1,2,3,4],"arrayBigIntCol":[70000,600000000,8000],
+        |"arrayRealCol":[1.1,2.2,3.3],"arrayDoubleCol":[1.1,2.2,4.45,3.3],
+        |"arrayBooleanCol": [true, true, true]} """.stripMargin
+    val json3: String =
+      """ {"stringCol": "Rio","intCol": 16,"doubleCol": 12.5,"realCol": 14.7,
+        |"boolCol": true, "arrayStringCol1": ["Street1", "Street2","Street3"],
+        |"arrayStringCol2": ["China", "Brazil", "Paris", 
"France"],"arrayIntCol": [1,2,3,4,5],
+        
|"arrayBigIntCol":[70000,600000000,8000,9111111111],"arrayRealCol":[1.1,2.2,3.3,4.45],
+        |"arrayDoubleCol":[1.1,2.2,4.45,5.5,3.3], "arrayBooleanCol": [true, 
false, true]} """
+        .stripMargin
+    val json4: String =
+      """ {"stringCol": "bob","intCol": 14,"doubleCol": 10.5,"realCol": 12.7,
+        |"boolCol": true, "arrayStringCol1":["Street1"],"arrayStringCol2": 
["India", "Egypt"],
+        |"arrayIntCol": 
[1,2,3],"arrayBigIntCol":[70000,600000000],"arrayRealCol":[1.1,2.2],
+        |"arrayDoubleCol":[1.1,2.2,3.3], "arrayBooleanCol": [true, false, 
true]} """.stripMargin
+    val json5: String =
+      """ {"stringCol": "Alex","intCol": 15,"doubleCol": 11.5,"realCol": 13.7,
+        |"boolCol": true, "arrayStringCol1": ["Street1", 
"Street2"],"arrayStringCol2": ["Japan",
+        |"China", "India"],"arrayIntCol": 
[1,2,3,4],"arrayBigIntCol":[70000,600000000,8000],
+        |"arrayRealCol":[1.1,2.2,3.3],"arrayDoubleCol":[4,1,21.222,15.231],
+        |"arrayBooleanCol": [false, false, false]} """.stripMargin
+
+
+    val mySchema =
+      """ {
+        |      "name": "address",
+        |      "type": "record",
+        |      "fields": [
+        |      {
+        |      "name": "stringCol",
+        |      "type": "string"
+        |      },
+        |      {
+        |      "name": "intCol",
+        |      "type": "int"
+        |      },
+        |      {
+        |      "name": "doubleCol",
+        |      "type": "double"
+        |      },
+        |      {
+        |      "name": "realCol",
+        |      "type": "float"
+        |      },
+        |      {
+        |      "name": "boolCol",
+        |      "type": "boolean"
+        |      },
+        |      {
+        |      "name": "arrayStringCol1",
+        |      "type": {
+        |      "type": "array",
+        |      "items": {
+        |      "name": "street",
+        |      "type": "string"
+        |      }
+        |      }
+        |      },
+        |      {
+        |      "name": "arrayStringCol2",
+        |      "type": {
+        |      "type": "array",
+        |      "items": {
+        |      "name": "street",
+        |      "type": "string"
+        |      }
+        |      }
+        |      },
+        |      {
+        |      "name": "arrayIntCol",
+        |      "type": {
+        |      "type": "array",
+        |      "items": {
+        |      "name": "street",
+        |      "type": "int"
+        |      }
+        |      }
+        |      },
+        |      {
+        |      "name": "arrayBigIntCol",
+        |      "type": {
+        |      "type": "array",
+        |      "items": {
+        |      "name": "street",
+        |      "type": "long"
+        |      }
+        |      }
+        |      },
+        |      {
+        |      "name": "arrayRealCol",
+        |      "type": {
+        |      "type": "array",
+        |      "items": {
+        |      "name": "street",
+        |      "type": "float"
+        |      }
+        |      }
+        |      },
+        |      {
+        |      "name": "arrayDoubleCol",
+        |      "type": {
+        |      "type": "array",
+        |      "items": {
+        |      "name": "street",
+        |      "type": "double"
+        |      }
+        |      }
+        |      },
+        |      {
+        |      "name": "arrayBooleanCol",
+        |      "type": {
+        |      "type": "array",
+        |      "items": {
+        |      "name": "street",
+        |      "type": "boolean"
+        |      }
+        |      }
+        |      }
+        |      ]
+        |  }
+                   """.stripMargin
+
+    val nn = new avro.Schema.Parser().parse(mySchema)
+    val record1 = testUtil.jsonToAvro(json1, mySchema)
+    val record2 = testUtil.jsonToAvro(json2, mySchema)
+    val record3 = testUtil.jsonToAvro(json3, mySchema)
+    val record4 = testUtil.jsonToAvro(json4, mySchema)
+    val record5 = testUtil.jsonToAvro(json5, mySchema)
+    var writerPath = new File(this.getClass.getResource("/").getPath
+                              + "../../target/store/sdk_output/files")
+      .getCanonicalPath
+    //getCanonicalPath gives path with \, but the code expects /.
+    writerPath = writerPath.replace("\\", "/")
+    try {
+      val writer = CarbonWriter.builder
+        .outputPath(writerPath)
+        .enableLocalDictionary(false)
+        .uniqueIdentifier(System.currentTimeMillis())
+        .withAvroInput(nn)
+        .writtenBy("GenerateFiles")
+        .build()
+      writer.write(record1)
+      writer.write(record2)
+      writer.write(record3)
+      writer.write(record4)
+      writer.write(record5)
+      writer.close()
+    } catch {
+      case e: Exception =>
+        e.printStackTrace()

Review comment:
       remove e.printStackTrace() in new test case added
   




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