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MW-399 Freeing wsrep_status_vars, before provider is released.

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This is needed to clear THD::wsrep_status_vars reference,
which would otherwise remain to point to status variable array, which is no more effective.
This commit is contained in:
sjaakola 2017-08-10 14:04:55 +03:00 committed by Jan Lindström
parent 6d783b6a76
commit c6251e36fc
1 changed files with 8 additions and 1 deletions
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9
sql/wsrep_var.cc
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@ -300,8 +300,15 @@ bool wsrep_provider_update (sys_var *self, THD* thd, enum_var_type type)
if (wsrep_inited == 1) if (wsrep_inited == 1)
wsrep_deinit(false); wsrep_deinit(false);
char* tmp= strdup(wsrep_provider); // wsrep_init() rewrites provider char* tmp= strdup(wsrep_provider); // wsrep_init() rewrites provider
//when fails //when fails
/* provider status variables are allocated in provider library
and need to freed here, otherwise a dangling reference to
wsrep_status_vars would remain in THD
*/
wsrep_free_status(thd);
if (wsrep_init()) if (wsrep_init())
{ {
my_error(ER_CANT_OPEN_LIBRARY, MYF(0), tmp); my_error(ER_CANT_OPEN_LIBRARY, MYF(0), tmp);