Update the implementation to interact with the new "don't maintain a
connection to the cluster controller unless necessary" change, and
unlock the originalDB at the end of the workload.
FDB clients talk to coordinators to monitor the leader, and then ask
them for proxies. Once proxies are known, the clients still keep
talking to coordinators. This patch, stops this monitoring and
reconnects to coordinators only if one of the proxy is no longer
available.
This commit includes functionality to turn on
the object serializer for network communication.
This is done the following way:
- On incoming connections, a process will detect
whether the client supports the object serializer
and will only serialize responses with it, if it does
- On outgoing connections, the command line flag is used
to determine whether the object serializer should be used
to send data.
This way, a cluster can run in mixed mode. To upgrade one
can upgrade one process at a time and set the flag one process
at a time.
This is how this is tested on the simulator:
- The command line flag can take three options: on, off,
and random.
- For off, the object serializer will never we used.
- For on, the object serializer will be always used.
- For random, the simulator will flip a coin for each
process it starts up.
A client will always try to connect all coordinators.
This commit let Status track the number of connected coordinators
for each client.
This allows us to do canary in coordinators. For example,
when we switch from non-TLS to TLS, we can switch 1 coordinator
from non-TLS to TLS. This can help check if a client has the ability
to connect through TLS.
We can make the non-TLS to TLS switch for each coordinators
one by one. This avoid the risk of losing connection in the switch.
* client-transaction-id:
Add user provided transaction id as part of the format in ClientTransactionProfileCorrectness workload.
Addressed review comments.
Apply suggestions from code review
Add support for client provided transaction identifier to be logged as part of trace logging or transaction profiling.
Jingyu Zhou