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https://issues.apache.org/jira/browse/STORM-1167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14991118#comment-14991118
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ASF GitHub Bot commented on STORM-1167:
---------------------------------------
Github user arunmahadevan commented on a diff in the pull request:
https://github.com/apache/storm/pull/855#discussion_r43975856
--- Diff:
storm-core/src/jvm/backtype/storm/topology/base/BaseWindowedBolt.java ---
@@ -0,0 +1,184 @@
+/**
+ * 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
+ * <p/>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p/>
+ * 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 backtype.storm.topology.base;
+
+import backtype.storm.Config;
+import backtype.storm.task.OutputCollector;
+import backtype.storm.task.TopologyContext;
+import backtype.storm.topology.IWindowedBolt;
+import backtype.storm.topology.OutputFieldsDeclarer;
+import backtype.storm.windowing.TupleWindow;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+
+public class BaseWindowedBolt implements IWindowedBolt {
+ private static final Logger LOG =
LoggerFactory.getLogger(BaseWindowedBolt.class);
+
+ private transient Map<String, Object> windowConfiguration;
--- End diff --
I added new constants in Config and overriding it here via the
componentConfiguration. This gives a way to define default values for these
params at topology level if needed and override it at per bolt level. Defining
it in same place with other params makes it more consistent and enables us to
reuse the constants for trident as well. I think defining it in
BaseWindowedBolt makes it more specific to core.
> Add sliding & tumbling window support for core storm
> ----------------------------------------------------
>
> Key: STORM-1167
> URL: https://issues.apache.org/jira/browse/STORM-1167
> Project: Apache Storm
> Issue Type: Improvement
> Reporter: Arun Mahadevan
> Assignee: Arun Mahadevan
>
> Currently, topologies that needs windowing support requires writing custom
> logic inside bolts making it tedious to handle the windowing and acking logic
> with custom logic.
> We can add framework level support to core storm bolts to process tuples in a
> time or a count based window. Sliding and tumbling windows can be supported.
> Later this can be extended to trident apis as well.
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