Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/2570#discussion_r84036274
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/InternalTimerService.java
---
@@ -0,0 +1,60 @@
+/*
+ * 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.api.operators;
+
+import org.apache.flink.annotation.Internal;
+
+/**
+ * Interface for working with time and timers.
+ *
+ * <p>This is the internal version of {@link
org.apache.flink.streaming.api.TimerService}
+ * that allows to specify a key and a namespace to which timers should be
scoped.
+ *
+ * @param <N> Type of the namespace to which timers are scoped.
+ */
+@Internal
+public interface InternalTimerService<N> {
+
+ /** Returns the current processing time. */
+ long currentProcessingTime();
+
+ /** Returns the current event time. */
+ long currentWatermark();
--- End diff --
Jip, will rename everything to `currentWatermark()` because that's also
what we already have in other places.
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