Github user akumarb2010 commented on a diff in the pull request:
https://github.com/apache/drill/pull/1027#discussion_r151890205
--- Diff:
contrib/storage-kafka/src/main/java/org/apache/drill/exec/store/kafka/KafkaRecordReader.java
---
@@ -0,0 +1,178 @@
+/**
+ * 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.drill.exec.store.kafka;
+
+import static
org.apache.drill.exec.store.kafka.DrillKafkaConfig.DRILL_KAFKA_POLL_TIMEOUT;
+
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.drill.common.exceptions.ExecutionSetupException;
+import org.apache.drill.common.expression.SchemaPath;
+import org.apache.drill.exec.ExecConstants;
+import org.apache.drill.exec.ops.FragmentContext;
+import org.apache.drill.exec.ops.OperatorContext;
+import org.apache.drill.exec.physical.impl.OutputMutator;
+import org.apache.drill.exec.store.AbstractRecordReader;
+import org.apache.drill.exec.store.kafka.KafkaSubScan.KafkaSubScanSpec;
+import org.apache.drill.exec.store.kafka.decoders.MessageReader;
+import org.apache.drill.exec.store.kafka.decoders.MessageReaderFactory;
+import org.apache.drill.exec.util.Utilities;
+import org.apache.drill.exec.vector.complex.impl.VectorContainerWriter;
+import org.apache.kafka.clients.consumer.ConsumerRecord;
+import org.apache.kafka.clients.consumer.ConsumerRecords;
+import org.apache.kafka.clients.consumer.KafkaConsumer;
+import org.apache.kafka.common.TopicPartition;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.base.Stopwatch;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Sets;
+public class KafkaRecordReader extends AbstractRecordReader {
+ private static final Logger logger =
LoggerFactory.getLogger(KafkaRecordReader.class);
+ public static final long DEFAULT_MESSAGES_PER_BATCH = 4000;
+
+ private VectorContainerWriter writer;
+ private MessageReader messageReader;
+
+ private boolean unionEnabled;
+ private KafkaConsumer<byte[], byte[]> kafkaConsumer;
+ private KafkaStoragePlugin plugin;
--- End diff --
This is taken care.
---
