[PATCH v2] box: allow vinyl_memory set to 0 in config
Vladimir Davydov
vdavydov.dev at gmail.com
Wed Jul 4 16:37:35 MSK 2018
On Wed, Jul 04, 2018 at 04:23:48PM +0300, Serge Petrenko wrote:
> Sorry, forgot to post diff.
All extra information that you want to get to the reviewer should go
after --- (where you put branch and change log). This way it will be
ignored by `git am` (we don't use it now, but people in other projects
do and we might want to start using it instead of `git merge` one day).
>
> In 1.9 it was possible to have a vinylless configuration with
> vinyl_memory=0, allow to do this in 1.10 by adjusting sanity
> checks for vinyl_memory and memtx_memory. Now banning only
> negative values.
> memtx_memory check was changed for consistency, trying to
> set memtx_memory to 0 fails anyways.
> Also added a test to check that vinyl_memory can actually
> be set to 0.
>
> Closes: #3468
> ---
> https://github.com/tarantool/tarantool/tree/sergepetrenko/gh-3468-allow-0-vinyl-memory
> https://github.com/tarantool/tarantool/issues/3468
>
> Changes in v2:
> - added a test case to check vinyl_memory=0 is legal.
> diff --git a/test/box-tap/cfg.test.lua b/test/box-tap/cfg.test.lua
> index b93a21f35..764fade93 100755
> --- a/test/box-tap/cfg.test.lua
> +++ b/test/box-tap/cfg.test.lua
> @@ -6,7 +6,7 @@ local socket = require('socket')
> local fio = require('fio')
> local uuid = require('uuid')
> local msgpack = require('msgpack')
> -test:plan(91)
> +test:plan(93)
>
> --------------------------------------------------------------------------------
> -- Invalid values
> @@ -82,9 +82,15 @@ os.execute("rm -rf vinyl")
> box.cfg{
> log="tarantool.log",
> memtx_memory=104857600,
> + vinyl_memory=0,
> wal_mode = "", -- "" means default value
> }
>
> +status, result = pcall(testfun)
> +test:ok(status and result == "table", "allow vinyl_memory set to 0 in box.cfg")
> +test:is(box.cfg.vinyl_memory, 0, "vinyl_memory actually set to 0")
> +
> +box.cfg{vinyl_memory=128 * 1024 * 1024}
> -- gh-678: vinyl engine creates vinyl dir with empty 'snapshot' file
> test:isnil(io.open("vinyl", 'r'), 'vinyl_dir is not auto-created')
That's not exactly what I meant. There's an easier way to test initial
box configuration:
code = [[ box.cfg{ vinyl_memory=0 } ]]
test:is(run_script(code), 0, 'vinyl_memory is 0')
(there are plenty of similar test cases in box-tap/cfg.test.lua)
Also, when you add a test case, please write a brief description with a
reference to the github ticket you're fixing, e.g.
(also from box-tap/cfg.test.lua)
> -- gh-2664: vinyl_dir is checked on the first use
> code = [[ box.cfg{ vinyl_dir='invalid' } ]]
> test:is(run_script(code), 0, 'vinyl_dir is invalid')
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