Summary:
We saw the below assertion failure in `error_handler_fs_test`:
```
db/error_handler_fs_test.cc:2471: Failure
Expected equality of these values:
listener->new_bg_error()
Which is: 16-byte object <00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00>
Status::Aborted()
Which is: 16-byte object <0A-00 00-00 60-61 00-00 00-00 00-00 00-00 00-00>
terminate called after throwing an instance of 'testing::internal::GoogleTestFailureException'
what(): db/error_handler_fs_test.cc:2471: Failure
Expected equality of these values:
listener->new_bg_error()
Which is: 16-byte object <00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00>
Status::Aborted()
Which is: 16-byte object <0A-00 00-00 60-61 00-00 00-00 00-00 00-00 00-00>
Received signal 6 (Aborted)
```
The problem was completing `OnErrorRecoveryCompleted()` would
wake up the main thread and allow it to proceed to that assertion. But
that assertion assumes `OnErrorRecoveryEnd()` has completed since
only `OnErrorRecoveryEnd()` affects `new_bg_error()`.
The fix is just to make `OnErrorRecoveryCompleted()` not wake up the
main thread, by means of not implementing it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9325
Test Plan:
- ran `while TEST_TMPDIR=/dev/shm ./error_handler_fs_test ; do : ; done` for a while
- injected sleep between `OnErrorRecovery{Completed,End}()` callbacks, which guaranteed repro before this PR
Reviewed By: anand1976
Differential Revision: D33249200
Pulled By: ajkr
fbshipit-source-id: 1659ee183cd09f90d4dbd898f65103473fcf84a8
782fcc44e1