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From tammymendt <...@git.apache.org>
Subject [GitHub] flink pull request: [FLINK-1297] Added OperatorStatsAccumulator fo...
Date Fri, 17 Apr 2015 13:26:11 GMT
Github user tammymendt commented on a diff in the pull request:

    https://github.com/apache/flink/pull/605#discussion_r28593077
  
    --- Diff: flink-core/pom.xml ---
    @@ -63,6 +63,19 @@ under the License.
     			<artifactId>guava</artifactId>
     			<version>${guava.version}</version>
     		</dependency>
    +
    +        <dependency>
    +            <groupId>com.clearspring.analytics</groupId>
    +            <artifactId>stream</artifactId>
    +            <version>2.7.0</version>
    +            <exclusions>
    +                <exclusion>
    +                    <groupId>it.unimi.dsi</groupId>
    +                    <artifactId>fastutil</artifactId>
    --- End diff --
    
    The library we are using from clearspring implements a series of streaming algorithms.
We are only using HyperLogLog and CountMinSketch to estimate count distinct and heavy hitters
respectively. As far as I could see fastutil is used only in the implementation of a separate
streaming algorithm to track histograms (QDigest). Since we are not using this particular
algorithm, it should be ok to exclude fastutil from the dependency. 


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