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diff --git a/fluent-bit/lib/librdkafka-2.1.0/tests/java/IncrementalRebalanceCli.java b/fluent-bit/lib/librdkafka-2.1.0/tests/java/IncrementalRebalanceCli.java
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--- a/fluent-bit/lib/librdkafka-2.1.0/tests/java/IncrementalRebalanceCli.java
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@@ -1,97 +0,0 @@
-/*
- * librdkafka - Apache Kafka C library
- *
- * Copyright (c) 2020, Magnus Edenhill
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-import java.io.IOException;
-import java.io.PrintWriter;
-
-import org.apache.kafka.clients.consumer.KafkaConsumer;
-import org.apache.kafka.clients.consumer.Consumer;
-import org.apache.kafka.clients.consumer.ConsumerConfig;
-import org.apache.kafka.clients.consumer.ConsumerRecord;
-import org.apache.kafka.clients.consumer.ConsumerRecords;
-import org.apache.kafka.clients.consumer.CooperativeStickyAssignor;
-import org.apache.kafka.common.KafkaException;
-
-import java.lang.Integer;
-import java.util.HashMap;
-import java.util.List;
-import java.util.ArrayList;
-import java.util.Properties;
-import java.time.Duration;
-
-
-public class IncrementalRebalanceCli {
- public static void main (String[] args) throws Exception {
- String testName = args[0];
- String brokerList = args[1];
- String topic1 = args[2];
- String topic2 = args[3];
- String group = args[4];
-
- if (!testName.equals("test1")) {
- throw new Exception("Unknown command: " + testName);
- }
-
- Properties consumerConfig = new Properties();
- consumerConfig.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, brokerList);
- consumerConfig.put(ConsumerConfig.GROUP_ID_CONFIG, group);
- consumerConfig.put(ConsumerConfig.CLIENT_ID_CONFIG, "java_incrreb_consumer");
- consumerConfig.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.ByteArrayDeserializer");
- consumerConfig.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.ByteArrayDeserializer");
- consumerConfig.put(ConsumerConfig.PARTITION_ASSIGNMENT_STRATEGY_CONFIG, CooperativeStickyAssignor.class.getName());
- Consumer<byte[], byte[]> consumer = new KafkaConsumer<>(consumerConfig);
-
- List<String> topics = new ArrayList<>();
- topics.add(topic1);
- topics.add(topic2);
- consumer.subscribe(topics);
-
- long startTime = System.currentTimeMillis();
- long timeout_s = 300;
-
- try {
- boolean running = true;
- while (running) {
- ConsumerRecords<byte[], byte[]> records = consumer.poll(Duration.ofMillis(1000));
- if (System.currentTimeMillis() - startTime > 1000 * timeout_s) {
- // Ensure process exits eventually no matter what happens.
- System.out.println("IncrementalRebalanceCli timed out");
- running = false;
- }
- if (consumer.assignment().size() == 6) {
- // librdkafka has unsubscribed from topic #2, exit cleanly.
- running = false;
- }
- }
- } finally {
- consumer.close();
- }
-
- System.out.println("Java consumer process exiting");
- }
-}