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From: mfranklin <git@git.apache.org>
To: dev@streams.incubator.apache.org
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References: <git-pr-66-incubator-streams@git.apache.org>
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Subject: [GitHub] incubator-streams pull request: Streams 143
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Message-Id: <20140812234104.DED46990B67@tyr.zones.apache.org>
Date: Tue, 12 Aug 2014 23:41:04 +0000 (UTC)

Github user mfranklin commented on a diff in the pull request:

    https://github.com/apache/incubator-streams/pull/66#discussion_r16150363
  
    --- Diff: streams-util/src/main/java/org/apache/streams/util/api/requests/backoff/impl/ExponentialBackOffStrategy.java ---
    @@ -0,0 +1,32 @@
    +package org.apache.streams.util.api.requests.backoff.impl;
    +
    +import org.apache.streams.util.api.requests.backoff.BackOffStrategy;
    +
    +/**
    + * Exponential backk strategy.  Caluclated by baseBackOffTimeInSeconds raised the attempt-count power.
    + */
    +public class ExponentialBackOffStrategy extends BackOffStrategy {
    +
    +
    +    /**
    +     * Unlimited use ExponentialBackOffStrategy
    +     * @param baseBackOffTimeInSeconds
    +     */
    +    public ExponentialBackOffStrategy(int baseBackOffTimeInSeconds) {
    +        this(baseBackOffTimeInSeconds, -1);
    +    }
    +
    +    /**
    +     * Limited use ExponentialBackOffStrategy
    +     * @param baseBackOffTimeInSeconds
    +     * @param maxNumAttempts
    +     */
    +    public ExponentialBackOffStrategy(int baseBackOffTimeInSeconds, int maxNumAttempts) {
    +        super(baseBackOffTimeInSeconds, maxNumAttempts);
    +    }
    +
    +    @Override
    +    protected long calculateBackOffTime(int attemptCount, long baseSleepTime) {
    +        return Math.round(Math.pow(baseSleepTime, attemptCount)) * 1000;
    --- End diff --
    
    Why multiply by 1000?


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