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diff --git a/fluent-bit/lib/librdkafka-2.1.0/tests/0046-rkt_cache.c b/fluent-bit/lib/librdkafka-2.1.0/tests/0046-rkt_cache.c
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@@ -0,0 +1,65 @@
+/*
+ * librdkafka - Apache Kafka C library
+ *
+ * Copyright (c) 2012-2015, 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.
+ */
+
+#include "test.h"
+#include "rdkafka.h"
+
+#include <stdarg.h>
+
+/**
+ * Issue #345, #821
+ * Test that topic_new() + topic_destroy() can be used as a topic-lookup cache,
+ * i.e., as long as the app topic refcount stays above 1 the app can call
+ * new() and destroy() any number of times (symetrically).
+ */
+
+
+int main_0046_rkt_cache(int argc, char **argv) {
+        rd_kafka_t *rk;
+        rd_kafka_topic_t *rkt;
+        const char *topic = test_mk_topic_name(__FUNCTION__, 0);
+        int i;
+
+        rk = test_create_producer();
+
+        rkt = test_create_producer_topic(rk, topic, NULL);
+
+        for (i = 0; i < 100; i++) {
+                rd_kafka_topic_t *rkt2;
+
+                rkt2 = rd_kafka_topic_new(rk, topic, NULL);
+                TEST_ASSERT(rkt2 != NULL);
+
+                rd_kafka_topic_destroy(rkt2);
+        }
+
+        rd_kafka_topic_destroy(rkt);
+        rd_kafka_destroy(rk);
+
+        return 0;
+}