[patches] [PATCH vshard 2/4] Yield on reloading an infinite fiber

[Vladislav Shpilevoy]

If there is an error in a new fiber function, then with no yields
it enters in an infinite loop and block entire TX thread. Do
yield to be able to reload back to the old function.

Signed-off-by: Vladislav Shpilevoy <v.shpilevoy at tarantool.org>
---
 vshard/util.lua | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/vshard/util.lua b/vshard/util.lua
index f2feec1..184aad5 100644
--- a/vshard/util.lua
+++ b/vshard/util.lua
@@ -1,5 +1,6 @@
 -- vshard.util
-log = require('log')
+local log = require('log')
+local fiber = require('fiber')
 
 --
 -- Extract parts of a tuple.
@@ -39,8 +40,10 @@ local function reloadable_fiber_f(M, func_name, worker_name)
         local ok, err = pcall(M[func_name], M.module_version)
         if not ok then
             log.error('%s has been failed: %s', worker_name, err)
+            fiber.yield()
         else
             log.info('%s has been reloaded', worker_name)
+            fiber.yield()
         end
     end
 end
-- 
2.14.3 (Apple Git-98)