Testspec is currently very permissive in very misleading ways. In particular,
the tester parser itself will swallow K=V settings and apply them at the test
level, which breaks how a person would expect the scoping to work. Other
settings apply to the entire simulation run globally, but appear to be workload
specific. Even further, others affect simulation cluster creation or test
harness behavior, but can again be set anywhere in a testspec.
This changes testspec parsing to error if a setting that applies globally is
anywhere but the top of the file, or if a setting that applies test-wide is
applied to a workload instead of a test.
'--restoring' command line option was introduced to indicate
simulated fdbserver to restore from snapshot and restart the cluster.
As part of this change that option is removed and restore
information is stored in the restartInfo.ini.
In Tlogs, disable pop is done whlie taking snapshots. Earlier, tlogs
were ignoring the pops if it got pop requests when pops were
disabled. In this change, instead of ignoring the pop - it remembers
the list of pops in-memory and plays them once the popping is
enabled.
- exec operation to go to all the TLogs
- minor bug fix in tlog
- restore implementation for the simulator
- restore snap UID to be stored in restartInfo.ini
- test cases added
- indentation and trace file fixes
This mega-commit introduces a new configuration setting, `log_version`,
that controls the TLog implementations and features that are available
within FDB, so that users can opt in to new features if they're willing
to sacrifice backwards compatibility.
David Youngworth