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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (BEAM-2805) Potential arithmetic overflow in Generator#nextAuctionLengthMs()
Date Thu, 24 Aug 2017 21:45:01 GMT
Ted Yu created BEAM-2805:
----------------------------

             Summary: Potential arithmetic overflow in Generator#nextAuctionLengthMs()
                 Key: BEAM-2805
                 URL: https://issues.apache.org/jira/browse/BEAM-2805
             Project: Beam
          Issue Type: Bug
          Components: sdk-java-extensions
            Reporter: Ted Yu
            Assignee: Reuven Lax
            Priority: Minor


{code}
    long numEventsForAuctions =
        (config.configuration.numInFlightAuctions * GeneratorConfig.PROPORTION_DENOMINATOR)
        / GeneratorConfig.AUCTION_PROPORTION;
{code}
The multiplication is done on 32-bit integers while long is expected (numEventsForAuctions).

There is possibility for arithmetic overflow



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