[HADOOP-14902] LoadGenerator#genFile write close timing is incorrectly calculated

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.9.0, 2.8.3, 2.7.5, 3.0.0
• Component/s: fs
• Target Version/s: 2.8.3, 2.7.5
• Hadoop Flags: Reviewed
• Assignee: Hanisha Koneru
• Reporter: Jason Darrell Lowe
• Created: 22/Sep/17 20:13
• Updated: 24/Apr/18 20:56
• Resolved: 28/Sep/17 21:49

Description

LoadGenerator#genFile's write close timing code looks like the following:

        startTime = Time.now();
        executionTime[WRITE_CLOSE] += (Time.now() - startTime);

That code will generate a zero (or near zero) write close timing since it isn't actually closing the file in-between timestamp lookups.

Issue Links

• is broken by: HADOOP-10328 loadGenerator exit code is not reliable