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Fix db_rate_limiter_test for win (#12816) 

Summary:
We didn't implement file system prefetch for OS Win. During table open, it uses `FilePrefetchBuffer` instead and only do 1 read instead of 4 in BufferedIO.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12816

Reviewed By: jaykorean

Differential Revision: D59181835

Pulled By: ajkr

fbshipit-source-id: 18b8f0247408cd1a80f289357ede5232ae5a3c66
This commit is contained in:
Jeffery 2024-07-01 16:14:19 -07:00 committed by Facebook GitHub Bot
parent 9eebaf11cb
commit 093f4ef82c
1 changed files with 6 additions and 0 deletions
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6
db/db_rate_limiter_test.cc
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@ -245,7 +245,13 @@ TEST_P(DBRateLimiterOnReadTest, VerifyChecksum) {
// In DirectIO, where we support tail prefetching, during table open, we only
// do 1 read instead of 4 as described above. Actual checksum verification
// reads stay the same.
#ifdef OS_WIN
// No file system prefetch implemented for OS Win. During table open,
// we only do 1 read for BufferedIO.
int num_read_per_file = 4;
#else
int num_read_per_file = (!use_direct_io_) ? 7 : 4;
#endif
int expected = kNumFiles * num_read_per_file;
ASSERT_EQ(expected, options_.rate_limiter->GetTotalRequests(Env::IO_USER));