rocksdb 8.9.1 unit test failed

hello.
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system: centos-8-x64, it's docker image, in cetnos7.4.
gcc version: 8.3.1 20191121(red hat 8.3.1-5)
1. db/compaction/compaction_job_stats_test.cc:456 Failure actual:63586 vs 63196.8
2. db/compaction/compaction_job_stats_test.cc:456 Failure actual:63586 vs 63196.8
3. db/db_wal_test.cc:2469 Failure actual:18427904 vs 18427904
4. cache/tiered_secondary_cache_test.cc:524 which is 0 3u which is 3
5. cache/tiered_secondary_cache_test.cc:382 which is 0 3u which is 3
6. cache/tiered_secondary_cache_test.cc:267 which is 0 3u which is 1
7. cache/tiered_secondary_cache_test.cc:623 which is 0 3u which is 8
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thanks.

Start by reproducing the reported unit-test failures in the CentOS 8 Docker environment with GCC 8.3.1. Read db/compaction/compaction_job_stats_test.cc, db/db_wal_test.cc, and cache/tiered_secondary_cache_test.cc at the cited lines; the issue is complete when the cause is identified and the affected tests pass reliably.

Written by the indexing model from the issue text.