arbitrary command with memcached

[tar-unix]

Hi,
I am trying to run memtier_benchmark to test memcached with arbitrary command options.
Here is my command

./memtier_benchmark -S $SOCKET --protocol=redis --threads=$NR_THREADS --pipeline=1 --key-minimum=1 --key-maximum=$KEY_MAX -n $PER_CLIENT_REQUESTS -c $NR_CLIENTS --hide-histogram --command="set key 5" --command-ratio=2 --command-key-pattern=R -D

But it fail with:
protocol.cpp:600: unsupported response: 'ERROR'.
error: response parsing failed.

When I checked, I understood that, --command option is implemented for redis protocol only, and memcached has ASCII, binary protocol. I am not sure If I understood it correctly.
How can I test memcached with arbitrary commands if it is possible?

~Tarun

[YaacovHazan]

Hi @jj-tarun I see that you are using --protocol=redis, so I'm a bit confused are you trying to test redis or memcached? currently the memcache_text_protocol / memcache_binary_protocol doesn't support the '--command` option.