Github user mjsax commented on a diff in the pull request:
https://github.com/apache/flink/pull/1813#discussion_r67622383
--- Diff:
flink-streaming-connectors/flink-connector-redis/src/main/java/org/apache/flink/streaming/connectors/redis/common/container/RedisCommandsContainer.java
---
@@ -0,0 +1,99 @@
+/*
+ * 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.redis.common.container;
+
+import java.io.IOException;
+import java.io.Serializable;
+
+/**
+ * The container for all available Redis Commands.
+ */
+public interface RedisCommandsContainer extends Serializable {
+
+ /**
+ * Sets field in the hash stored at key to value.
+ * If key does not exist, a new key holding a hash is created.
+ * If field already exists in the hash, it is overwritten.
+ *
+ * @param hashName Hash name
+ * @param key Hash key name
+ * @param value Hash value
+ */
+ void hset(String hashName, String key, String value);
+
+ /**
+ * Insert all the specified values at the tail of the list stored at
key.
--- End diff --
value, ie, multiple?
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