[FLINK-6474] Potential loss of precision in 32 bit integer multiplication

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.3.0
• Component/s: Runtime / Network
• Assignee: Ted Yu
• Reporter: Ted Yu
• Created: 07/May/17 16:56
• Updated: 09/May/17 08:40
• Resolved: 07/May/17 21:00

Description

In TaskManagerServicesConfiguration#parseNetworkEnvironmentConfiguration

    if (!hasNewNetworkBufConf(configuration)) {
      // map old config to new one:
      networkBufMin = networkBufMax = numNetworkBuffers * pageSize;

networkBufMax is a long.
However the multiplication is done in 32 bit integer, leading to potential loss of precision.

Issue Links

• links to: GitHub Pull Request #3839