[HADOOP-18384] ITestS3AFileSystemStatistic failure in prefetch feature branch

• Type: Sub-task
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.4.0
• Component/s: fs/s3, test
• Assignee: Samrat Deb
• Reporter: Steve Loughran
• Created: 02/Aug/22 13:11
• Updated: 14/Jul/23 16:47

Description

testing the rebased prefetch feature branch; got a failure in ITestS3AFileSystemStatistic

tics.ITestS3AFileSystemStatistic
[ERROR] Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 1.489 s <<< FAILURE! - in org.apache.hadoop.fs.s3a.statistics.ITestS3AFileSystemStatistic
[ERROR] testBytesReadWithStream(org.apache.hadoop.fs.s3a.statistics.ITestS3AFileSystemStatistic)  Time elapsed: 1.489 s  <<< FAILURE!
java.lang.AssertionError: Mismatch in number of FS bytes read by InputStreams expected:<2048> but was:<69537130>
        at org.apache.hadoop.fs.s3a.statistics.ITestS3AFileSystemStatistic.testBytesReadWithStream(ITestS3AFileSystemStatistic.java:72)

that;s 64MB + ~237 kb, the kind of values you would get from prefetching

but, prefetch was disabled in this test run.

maybe its just the fs stats aren't being reset between test cases