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[mod_mariadb] Fix "DeadLock. The retries are over." message.

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Co-authored-by: Sergei Rozhkov <git@zserg.ru>
This commit is contained in:
Sergei Rozhkov
2023-08-11 21:53:32 +05:00
committed by GitHub
parent ffadaffdd8
commit c5be6262b4
1 changed files with 14 additions and 0 deletions
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src/mod/databases/mod_mariadb/mod_mariadb.c
+14
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@@ -627,13 +627,27 @@ switch_status_t mariadb_send_query(mariadb_handle_t *handle, const char* sql)
{
char *err_str;
int ret;
unsigned retries = 60; /* 60 tries, will take 30 to 60 seconds at worst */
switch_safe_free(handle->sql);
handle->sql = strdup(sql);
again:
handle->stored_results = 0;
ret = mysql_real_query(&handle->con, sql, (unsigned long)strlen(sql));
if (ret) {
err_str = mariadb_handle_get_error(handle);
if (strstr(err_str, "Deadlock found when trying to get lock; try restarting transaction")) {
if (--retries > 0) {
switch_safe_free(err_str);
/* We are waiting for 500 ms and random time is not more than 500 ms.
This is necessary so that the delay on the primary and secondary servers does not coincide and deadlock does not occur again. */
switch_yield(500 + (rand() & 511));
goto again;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "DeadLock. The retries are over.\n");
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Failed to send query (%s) to database: %s\n", sql, err_str);
switch_safe_free(err_str);
mariadb_finish_results(handle);