@Test
    public void testListOffsetsWithMultiplePartitionsLeaderChange() throws Exception {
        Node node0 = new Node(0, "localhost", 8120);
        Node node1 = new Node(1, "localhost", 8121);
        Node node2 = new Node(2, "localhost", 8122);
        List<Node> nodes = asList(node0, node1, node2);

        final PartitionInfo oldPInfo1 = new PartitionInfo("foo", 0, node0,
            new Node[]{node0, node1, node2}, new Node[]{node0, node1, node2});
        final PartitionInfo oldPnfo2 = new PartitionInfo("foo", 1, node0,
            new Node[]{node0, node1, node2}, new Node[]{node0, node1, node2});
        List<PartitionInfo> oldPInfos = asList(oldPInfo1, oldPnfo2);

        final Cluster oldCluster = new Cluster("mockClusterId", nodes, oldPInfos,
            Collections.emptySet(), Collections.emptySet(), node0);
        final TopicPartition tp0 = new TopicPartition("foo", 0);
        final TopicPartition tp1 = new TopicPartition("foo", 1);

        try (AdminClientUnitTestEnv env = new AdminClientUnitTestEnv(oldCluster)) {
            env.kafkaClient().setNodeApiVersions(NodeApiVersions.create());

            env.kafkaClient().prepareResponse(prepareMetadataResponse(oldCluster, Errors.NONE));

            ListOffsetsTopicResponse t0 = ListOffsetsResponse.singletonListOffsetsTopicResponse(tp0, Errors.NOT_LEADER_OR_FOLLOWER, -1L, 345L, 543);
            ListOffsetsTopicResponse t1 = ListOffsetsResponse.singletonListOffsetsTopicResponse(tp1, Errors.LEADER_NOT_AVAILABLE, -2L, 123L, 456);
            ListOffsetsResponseData responseData = new ListOffsetsResponseData()
                    .setThrottleTimeMs(0)
                    .setTopics(asList(t0, t1));
            env.kafkaClient().prepareResponseFrom(new ListOffsetsResponse(responseData), node0);

            final PartitionInfo newPInfo1 = new PartitionInfo("foo", 0, node1,
                new Node[]{node0, node1, node2}, new Node[]{node0, node1, node2});
            final PartitionInfo newPInfo2 = new PartitionInfo("foo", 1, node2,
                new Node[]{node0, node1, node2}, new Node[]{node0, node1, node2});
            List<PartitionInfo> newPInfos = asList(newPInfo1, newPInfo2);

            final Cluster newCluster = new Cluster("mockClusterId", nodes, newPInfos,
                Collections.emptySet(), Collections.emptySet(), node0);

            env.kafkaClient().prepareResponse(prepareMetadataResponse(newCluster, Errors.NONE));

            t0 = ListOffsetsResponse.singletonListOffsetsTopicResponse(tp0, Errors.NONE, -1L, 345L, 543);
            responseData = new ListOffsetsResponseData()
                    .setThrottleTimeMs(0)
                    .setTopics(singletonList(t0));
            env.kafkaClient().prepareResponseFrom(new ListOffsetsResponse(responseData), node1);

            t1 = ListOffsetsResponse.singletonListOffsetsTopicResponse(tp1, Errors.NONE, -2L, 123L, 456);
            responseData = new ListOffsetsResponseData()
                    .setThrottleTimeMs(0)
                    .setTopics(singletonList(t1));
            env.kafkaClient().prepareResponseFrom(new ListOffsetsResponse(responseData), node2);

            Map<TopicPartition, OffsetSpec> partitions = new HashMap<>();
            partitions.put(tp0, OffsetSpec.latest());
            partitions.put(tp1, OffsetSpec.latest());
            ListOffsetsResult result = env.adminClient().listOffsets(partitions);
            Map<TopicPartition, ListOffsetsResultInfo> offsets = result.all().get();

            assertFalse(offsets.isEmpty());
            assertEquals(345L, offsets.get(tp0).offset());
            assertEquals(543, offsets.get(tp0).leaderEpoch().get().intValue());
            assertEquals(-1L, offsets.get(tp0).timestamp());
            assertEquals(123L, offsets.get(tp1).offset());
            assertEquals(456, offsets.get(tp1).leaderEpoch().get().intValue());
            assertEquals(-2L, offsets.get(tp1).timestamp());
        }
    }
Test that we propagate exceptions encountered when fetching metadata.
clients/src/test/java/org/apache/kafka/clients/admin/KafkaAdminClientTest.java