Github user xubo245 commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/1713#discussion_r178455504
--- Diff: examples/spark2/src/main/scala/org/apache/carbondata/benchmark/ConcurrentQueryBenchmark.scala ---
@@ -0,0 +1,575 @@
+/*
+ * 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.benchmark
+
+import java.io.File
+import java.text.SimpleDateFormat
+import java.util
+import java.util.Date
+import java.util.concurrent.{Callable, Executors, Future, TimeUnit}
+
+import scala.util.Random
+
+import org.apache.spark.sql.{DataFrame, Row, SaveMode, SparkSession}
+import org.apache.spark.sql.types._
+
+import org.apache.carbondata.core.constants.{CarbonCommonConstants, CarbonVersionConstants}
+import org.apache.carbondata.core.util.{CarbonProperties, CarbonUtil}
+
+// scalastyle:off println
+/**
+ * Test concurrent query performance of CarbonData
+ *
+ * This benchmark will print out some information:
+ * 1.Environment information
+ * 2.Parameters information
+ * 3.concurrent query performance result using parquet format
+ * 4.concurrent query performance result using CarbonData format
+ *
+ * This benchmark default run in local model,
+ * user can change 'runInLocal' to false if want to run in cluster,
+ * user can change variables like:
+ *
+ * spark-submit \
+ --class org.apache.carbondata.benchmark.ConcurrentQueryBenchmark \
--- End diff --
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