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https://issues.apache.org/jira/browse/FLINK-1977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14532631#comment-14532631
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ASF GitHub Bot commented on FLINK-1977:
---------------------------------------
Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/659#discussion_r29852045
--- Diff:
flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/functions/source/Source.java
---
@@ -0,0 +1,87 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
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+ * 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
+ *
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+ */
+
+package org.apache.flink.streaming.api.functions.source;
+
+import org.apache.flink.api.common.functions.Function;
+import org.joda.time.Instant;
--- End diff --
I thought Jodatime was the answer to Javas bad support for time. And
rolling this yourself can get quite tricky, I think.
Plus, the Google Dataflow API is also using jodatime Instant for their
timestamps.
> Rework Stream Operators to always be push based
> -----------------------------------------------
>
> Key: FLINK-1977
> URL: https://issues.apache.org/jira/browse/FLINK-1977
> Project: Flink
> Issue Type: Improvement
> Reporter: Aljoscha Krettek
> Assignee: Aljoscha Krettek
>
> This is a result of the discussion on the mailing list. This is an excerpt
> from the mailing list that gives the basic idea of the change:
> I propose to change all streaming operators to be push based, with a
> slightly improved interface: In addition to collect(), which I would
> call receiveElement() I would add receivePunctuation() and
> receiveBarrier(). The first operator in the chain would also get data
> from the outside invokable that reads from the input iterator and
> calls receiveElement() for the first operator in a chain.
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