weibozhao commented on a change in pull request #24:
URL: https://github.com/apache/flink-ml/pull/24#discussion_r755678624
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File path:
flink-ml-lib/src/main/java/org/apache/flink/ml/classification/knn/KnnModel.java
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@@ -0,0 +1,594 @@
+package org.apache.flink.ml.classification.knn;
+
+import org.apache.flink.api.common.eventtime.WatermarkStrategy;
+import org.apache.flink.api.common.functions.RichMapFunction;
+import org.apache.flink.api.common.typeinfo.TypeInformation;
+import org.apache.flink.api.connector.source.Source;
+import org.apache.flink.api.java.tuple.Tuple2;
+import org.apache.flink.api.java.typeutils.RowTypeInfo;
+import org.apache.flink.connector.file.sink.FileSink;
+import org.apache.flink.connector.file.src.FileSource;
+import org.apache.flink.core.fs.Path;
+import org.apache.flink.ml.api.core.Model;
+import org.apache.flink.ml.common.broadcast.BroadcastUtils;
+import org.apache.flink.ml.linalg.DenseMatrix;
+import org.apache.flink.ml.linalg.DenseVector;
+import org.apache.flink.ml.param.Param;
+import org.apache.flink.ml.util.ParamUtils;
+import org.apache.flink.ml.util.ReadWriteUtils;
+import org.apache.flink.shaded.curator4.com.google.common.base.Preconditions;
+import org.apache.flink.shaded.curator4.com.google.common.collect.ImmutableMap;
+import
org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.type.TypeReference;
+import org.apache.flink.streaming.api.datastream.DataStream;
+import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
+import
org.apache.flink.streaming.api.functions.sink.filesystem.bucketassigners.BasePathBucketAssigner;
+import
org.apache.flink.streaming.api.functions.sink.filesystem.rollingpolicies.OnCheckpointRollingPolicy;
+import org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator;
+import org.apache.flink.streaming.api.operators.OneInputStreamOperator;
+import org.apache.flink.streaming.runtime.streamrecord.StreamRecord;
+import org.apache.flink.table.api.DataTypes;
+import org.apache.flink.table.api.Schema;
+import org.apache.flink.table.api.Table;
+import org.apache.flink.table.api.bridge.java.StreamTableEnvironment;
+import org.apache.flink.table.api.internal.TableImpl;
+import org.apache.flink.table.catalog.ResolvedSchema;
+import org.apache.flink.table.types.DataType;
+import org.apache.flink.table.types.logical.utils.LogicalTypeParser;
+import org.apache.flink.table.types.utils.LogicalTypeDataTypeConverter;
+import org.apache.flink.types.Row;
+
+import org.apache.commons.lang3.ArrayUtils;
+import sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl;
+
+import java.io.IOException;
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.PriorityQueue;
+import java.util.TreeMap;
+import java.util.function.Function;
+
+/** Knn classification model fitted by estimator. */
+public class KnnModel implements Model<KnnModel>, KnnParams<KnnModel> {
+
+ private static final long serialVersionUID = 1303892137143865652L;
+
+ private static final String BROADCAST_STR = "broadcastModelKey";
Review comment:
OK, I will refine it later.
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