[TINKERPOP-2157] SparkStarBarrierInterceptor injects (Byte) 0

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.1
• Fix Version/s: 3.4.3, 3.5.0
• Component/s: process
• Assignee: Stephen Mallette
• Reporter: Daniel Kuppitz
• Created: 08/Feb/19 19:17
• Updated: 12/Jun/19 10:46
• Resolved: 12/Jun/19 10:46

Description

There are 3 tests that occasionally fail in SparkGraphComputerProcessIntegrateTest:

• g_V_name_min
• g_V_name_max
• g_V_age_min

In all cases, failure is a result of a mysterious (Byte) 0. Apparently, this zero gets injected by the SparkStarBarrierInterceptor. I came to this conclusion because I wasn't able to reproduce any of the failures after excluding this interceptor. However, the failures happen randomly*, so I can't say with 100% certainty that the interceptor is the problem.

 

* on my system it never happened in the Docker builds, rarely in IntelliJ debug sessions, but quite often when I just run the test suite in IntelliJ