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https://issues.apache.org/jira/browse/STORM-1839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15394008#comment-15394008
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ASF GitHub Bot commented on STORM-1839:
---------------------------------------
Github user harshach commented on a diff in the pull request:
https://github.com/apache/storm/pull/1586#discussion_r72281666
--- Diff:
external/storm-kinesis/src/main/java/org/apache/storm/kinesis/spout/ExponentialBackoffRetrier.java
---
@@ -0,0 +1,164 @@
+/**
+ * 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.storm.kinesis.spout;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.Serializable;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.SortedSet;
+import java.util.TreeSet;
+
+public class ExponentialBackoffRetrier implements
FailedMessageRetryHandler, Serializable {
+ private static final Logger LOG =
LoggerFactory.getLogger(ExponentialBackoffRetrier.class);
+ // Wait interfal for retrying after first failure
+ private final Long initialDelayMillis;
+ // Base for exponential function in seconds for retrying for second,
third and so on failures
+ private final Long baseSeconds;
+ // Maximum number of retries
+ private final Long maxRetries;
+ // map to track number of failures for each kinesis message that failed
+ private Map<KinesisMessageId, Long> failCounts = new HashMap<>();
+ // map to track next retry time for each kinesis message that failed
+ private Map<KinesisMessageId, Long> retryTimes = new HashMap<>();
+ // sorted set of records to be retrued based on retry time. earliest
retryTime record comes first
+ private SortedSet<KinesisMessageId> retryMessageSet = new
TreeSet<>(new RetryTimeComparator());
--- End diff --
are we going to store the same message in retryMessageSet and retryTimes?
> Kinesis Spout
> -------------
>
> Key: STORM-1839
> URL: https://issues.apache.org/jira/browse/STORM-1839
> Project: Apache Storm
> Issue Type: Improvement
> Reporter: Sriharsha Chintalapani
> Assignee: Priyank Shah
>
> As Storm is increasingly used in Cloud environments. It will great to have a
> Kinesis Spout integration in Apache Storm.
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