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https://issues.apache.org/jira/browse/FLINK-6416?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chesnay Schepler updated FLINK-6416:
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Component/s: Metrics
> Potential divide by zero issue in InputGateMetrics#refreshAndGetAvg()
> ---------------------------------------------------------------------
>
> Key: FLINK-6416
> URL: https://issues.apache.org/jira/browse/FLINK-6416
> Project: Flink
> Issue Type: Bug
> Components: Metrics, Network
> Affects Versions: 1.3.0, 1.4.0
> Reporter: Ted Yu
> Assignee: Chesnay Schepler
> Priority: Minor
> Fix For: 1.3.0, 1.4.0
>
>
> {code}
> int count = 0;
> for (InputChannel channel : inputGate.getInputChannels().values()) {
> if (channel instanceof RemoteInputChannel) {
> RemoteInputChannel rc = (RemoteInputChannel) channel;
> int size = rc.unsynchronizedGetNumberOfQueuedBuffers();
> total += size;
> ++count;
> }
> }
> return total / (float) count;
> {code}
> If count is zero at the end of the loop, the division would produce exception.
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