[GitHub] [incubator-pinot] mcvsubbu commented on a change in pull request #4747: Data Anonymizer Tool

[GitBox <gi...@apache.org>]

mcvsubbu commented on a change in pull request #4747: Data Anonymizer Tool
URL: https://github.com/apache/incubator-pinot/pull/4747#discussion_r340754700
 
 

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 File path: pinot-tools/src/main/java/org/apache/pinot/tools/PinotDataAndQueryAnonymizer.java
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 @@ -0,0 +1,1332 @@
+/**
+ * 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.pinot.tools;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Preconditions;
+import com.google.common.base.Stopwatch;
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileWriter;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+import java.util.Set;
+import java.util.concurrent.TimeUnit;
+import org.apache.avro.SchemaBuilder;
+import org.apache.avro.file.DataFileWriter;
+import org.apache.avro.generic.GenericData;
+import org.apache.avro.generic.GenericDatumWriter;
+import org.apache.commons.lang.RandomStringUtils;
+import org.apache.pinot.common.data.DateTimeFieldSpec;
+import org.apache.pinot.common.data.DimensionFieldSpec;
+import org.apache.pinot.common.data.FieldSpec;
+import org.apache.pinot.common.data.MetricFieldSpec;
+import org.apache.pinot.common.data.Schema;
+import org.apache.pinot.common.data.TimeFieldSpec;
+import org.apache.pinot.common.segment.ReadMode;
+import org.apache.pinot.core.data.GenericRow;
+import org.apache.pinot.core.data.readers.PinotSegmentRecordReader;
+import org.apache.pinot.core.indexsegment.immutable.ImmutableSegment;
+import org.apache.pinot.core.indexsegment.immutable.ImmutableSegmentLoader;
+import org.apache.pinot.core.segment.index.ColumnMetadata;
+import org.apache.pinot.core.segment.index.SegmentMetadataImpl;
+import org.apache.pinot.core.segment.index.readers.Dictionary;
+import org.apache.pinot.pql.parsers.Pql2Compiler;
+import org.apache.pinot.pql.parsers.pql2.ast.AstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.BetweenPredicateAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.BooleanOperatorAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.ComparisonPredicateAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.FunctionCallAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.GroupByAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.IdentifierAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.InPredicateAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.LiteralAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.OutputColumnAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.OutputColumnListAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.PredicateAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.PredicateListAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.SelectAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.StarColumnListAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.StarExpressionAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.StringLiteralAstNode;
+import org.apache.pinot.pql.parsers.pql2.ast.WhereAstNode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+/**
+ * The goal of this tool is to generate test dataset (as Avro files) with
+ * characteristics similar to a given source dataset. The source dataset is
+ * a set of Pinot segments. The tool can be used in situations where actual
+ * source data isn't allowed to be used for the purpose of testing (regression,
+ * performance, functional, evaluation of other OLAP systems etc).
+ *
+ * The tool understands the characteristics of the given dataset (Pinot segments)
+ * and generate corresponding random data while preserving those characteristics.
 
 Review comment:
   nit: s/generate/generates/

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