Since this commit, when running a sufficient number of tests, plus some bad luck in eviction order, tests fail.
One symptom is this type error message in the test output:
2023-01-18T19:41:09.456084Z ERROR writeback of buffer EphemeralPage { file_id: 143, blkno: 1492 } failed: failed to write back to ephemeral file at /tmp/.tmpBRiJZx/tenants/a873a4ca1c37bb76d12a5bc8779f7369/timelines/11223344556677881122334455667788/ephemeral-143 error: No such file or directory (os error 2)
The root cause is,presumably, that the TenantHarness's TempDir is dropped, and hence the directory deleted from the filesystem, while the ephemeral file ID is still referenced from the page cache.
problame
commented
1 year ago
Since this commit, when running a sufficient number of tests, plus some bad luck in eviction order, tests fail.
One symptom is this type error message in the test output:
The root cause is,presumably, that the
TenantHarness'sTempDiris dropped, and hence the directory deleted from the filesystem, while the ephemeral file ID is still referenced from the page cache.I'll post more root cause analysis later.