[jira] [Commented] (FLINK-9641) Pulsar Source Connector

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-9641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16641756#comment-16641756 ] 

ASF GitHub Bot commented on FLINK-9641:
---------------------------------------

zjuwangg commented on a change in pull request #6200: [FLINK-9641] [streaming-connectors] Flink pulsar source connector
URL: https://github.com/apache/flink/pull/6200#discussion_r223338960
 
 

 ##########
 File path: flink-connectors/flink-connector-pulsar/src/main/java/org/apache/flink/streaming/connectors/pulsar/PulsarConsumerSource.java
 ##########
 @@ -0,0 +1,203 @@
+/*
+ * 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.flink.streaming.connectors.pulsar;
+
+import org.apache.flink.api.common.functions.RuntimeContext;
+import org.apache.flink.api.common.serialization.DeserializationSchema;
+import org.apache.flink.api.common.typeinfo.TypeInformation;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.streaming.api.functions.source.MessageAcknowledgingSourceBase;
+import org.apache.flink.streaming.api.operators.StreamingRuntimeContext;
+import org.apache.flink.util.IOUtils;
+
+import org.apache.pulsar.client.api.Consumer;
+import org.apache.pulsar.client.api.Message;
+import org.apache.pulsar.client.api.MessageId;
+import org.apache.pulsar.client.api.PulsarClient;
+import org.apache.pulsar.client.api.PulsarClientException;
+import org.apache.pulsar.client.api.SubscriptionType;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Pulsar source (consumer) which receives messages from a topic and acknowledges messages.
+ * When checkpointing is enabled, it guarantees at least once processing semantics.
 
 Review comment:
   Can use state to achieve exactly once processing semantics?

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> Pulsar Source Connector
> -----------------------
>
>                 Key: FLINK-9641
>                 URL: https://issues.apache.org/jira/browse/FLINK-9641
>             Project: Flink
>          Issue Type: New Feature
>          Components: Streaming Connectors
>            Reporter: Chris Kellogg
>            Priority: Minor
>              Labels: pull-request-available
>
> Pulsar (https://github.com/apache/incubator-pulsar) is a distributed pub-sub messaging system currently in apache incubation. It is a very active project and there are committers from various companies and good adoption. This pr will add a source function to allow Flink jobs to process messages from Pulsar topics.
>  



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