deadlock on insert into civicrm_contact table

User was attempting to insert contact from browser while server was running other currently unspecified heavy load (probably large import). Temporary work-around was to try again. So far have not replicated the error, and am logging this issue in case it recurs for others.

Aug 27 19:27:53 [info] $Fatal Error Details = Array
(
[callback] => Array
(
[0] => CRM_Core_Error
[1] => handle
)

[code] => -1
[message] => DB Error: unknown error
[mode] => 16
[debug_info] => INSERT INTO civicrm_contact (contact_type , contact_sub_type , do_not_email , do_not_phone , do_not_mail , do_not_sms , do_not_trade , is_opt_out , external_identifier , sort_name , display_name , nick_name , legal_name , preferred_communication_method , preferred_language , preferred_mail_format , hash , source , communication_style_id , email_greeting_id , email_greeting_custom , postal_greeting_id , postal_greeting_custom , addressee_id , addressee_custom , organization_name , sic_code ) VALUES ('Organization' , '^AFood_Service_Operator^A' , 0 , 0 , 0 , 0 , 0 , 0 , '88035' , 'Atikokan Hotel' , 'Atikokan Hotel' , NULL , NULL , '' , 'en_US' , 'Both' , '01c4523dbb9ec267058369a37fe723eb' , NULL , 1 , NULL , NULL , NULL , NULL , 3 , NULL , 'Atikokan Hotel' , NULL ) [nativecode=1213 ** Deadlock found when trying to get lock; try restarting transaction]
[type] => DB_Error
[user_info] => INSERT INTO civicrm_contact (contact_type , contact_sub_type , do_not_email , do_not_phone , do_not_mail , do_not_sms , do_not_trade , is_opt_out , external_identifier , sort_name , display_name , nick_name , legal_name , preferred_communication_method , preferred_language , preferred_mail_format , hash , source , communication_style_id , email_greeting_id , email_greeting_custom , postal_greeting_id , postal_greeting_custom , addressee_id , addressee_custom , organization_name , sic_code ) VALUES ('Organization' , '^AFood_Service_Operator^A' , 0 , 0 , 0 , 0 , 0 , 0 , '88035' , 'Atikokan Hotel' , 'Atikokan Hotel' , NULL , NULL , '' , 'en_US' , 'Both' , '01c4523dbb9ec267058369a37fe723eb' , NULL , 1 , NULL , NULL , NULL , NULL , 3 , NULL , 'Atikokan Hotel' , NULL ) [nativecode=1213 ** Deadlock found when trying to get lock; try restarting transaction]
[to_string] => [db_error: message="DB Error: unknown error" code=-1 mode=callback callback=CRM_Core_Error::handle prefix="" info="INSERT INTO civicrm_contact (contact_type , contact_sub_type , do_not_email , do_not_phone , do_not_mail , do_not_sms , do_not_trade , is_opt_out , external_identifier , sort_name , display_name , nick_name , legal_name , preferred_communication_method , preferred_language , preferred_mail_format , hash , source , communication_style_id , email_greeting_id , email_greeting_custom , postal_greeting_id , postal_greeting_custom , addressee_id , addressee_custom , organization_name , sic_code ) VALUES ('Organization' , '^AFood_Service_Operator^A' , 0 , 0 , 0 , 0 , 0 , 0 , '88035' , 'Atikokan Hotel' , 'Atikokan Hotel' , NULL , NULL , '' , 'en_US' , 'Both' , '01c4523dbb9ec267058369a37fe723eb' , NULL , 1 , NULL , NULL , NULL , NULL , 3 , NULL , 'Atikokan Hotel' , NULL ) [nativecode=1213 ** Deadlock found when trying to get lock; try restarting transaction]"]
)

Aug 27 19:27:53 [info] $backTrace = #0 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Error.php(235): CRM_Core_Error::backtrace("backTrace", TRUE)
#1 [internal function](): CRM_Core_Error::handle(Object(DB_Error))
#2 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/packages/PEAR.php(931): call_user_func((Array:2), Object(DB_Error))
#3 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/packages/DB.php(976): PEAR_Error->PEAR_Error("DB Error: unknown error", -1, 16, (Array:2), "INSERT INTO civicrm_contact (contact_type , contact_sub_type , do_not_email ,...")
#4 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/packages/PEAR.php(564): DB_Error->DB_Error(-1, 16, (Array:2), "INSERT INTO civicrm_contact (contact_type , contact_sub_type , do_not_email ,...")
#5 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/packages/DB/common.php(1905): PEAR->raiseError(NULL, -1, NULL, NULL, "INSERT INTO civicrm_contact (contact_type , contact_sub_type , do_not_email ,...", "DB_Error", TRUE)
#6 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/packages/DB/mysql.php(895): DB_common->raiseError(-1, NULL, NULL, NULL, "1213 ** Deadlock found when trying to get lock; try restarting transaction")
#7 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/packages/DB/mysql.php(328): DB_mysql->mysqlRaiseError()
#8 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/packages/DB/common.php(1216): DB_mysql->simpleQuery("INSERT INTO civicrm_contact (contact_type , contact_sub_type , do_not_email ,...")
#9 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/packages/DB/DataObject.php(2442): DB_common->query("INSERT INTO civicrm_contact (contact_type , contact_sub_type , do_not_email ,...")
#10 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/packages/DB/DataObject.php(1060): DB_DataObject->_query("INSERT INTO civicrm_contact (contact_type , contact_sub_type , do_not_email ,...")
#11 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/DAO.php(450): DB_DataObject->insert()
#12 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Contact/BAO/Contact.php(230): CRM_Core_DAO->save()
#13 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Contact/BAO/Contact.php(328): CRM_Contact_BAO_Contact::add((Array:53))
#14 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Contact/Form/Contact.php(982): CRM_Contact_BAO_Contact::create((Array:53), TRUE, FALSE, TRUE)
#15 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Form.php(345): CRM_Contact_Form_Contact->postProcess()
#16 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/QuickForm/Action/Upload.php(166): CRM_Core_Form->mainProcess()
#17 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/QuickForm/Action/Upload.php(133): CRM_Core_QuickForm_Action_Upload->realPerform(Object(CRM_Contact_Form_Contact), "upload")
#18 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/packages/HTML/QuickForm/Controller.php(203): CRM_Core_QuickForm_Action_Upload->perform(Object(CRM_Contact_Form_Contact), "upload")
#19 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/packages/HTML/QuickForm/Page.php(103): HTML_QuickForm_Controller->handle(Object(CRM_Contact_Form_Contact), "upload")
#20 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Controller.php(353): HTML_QuickForm_Page->handle("upload")
#21 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Utils/Wrapper.php(115): CRM_Core_Controller->run()
#22 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Invoke.php(286): CRM_Utils_Wrapper->run("CRM_Contact_Form_Contact", "New Contact", (Array:1))
#23 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Invoke.php(86): CRM_Core_Invoke::runItem((Array:13))
#24 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm/CRM/Core/Invoke.php(54): CRM_Core_Invoke::_invoke((Array:3))
#25 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-content/plugins/civicrm/civicrm.php(1189): CRM_Core_Invoke::invoke((Array:3))
#26 [internal function](): CiviCRM_For_WordPress->invoke("")
#27 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-includes/plugin.php(496): call_user_func_array((Array:2), (Array:1))
#28 /home/24074-14898.cloudwaysapps.com/qnwmfhbcjk/public_html/wp-admin/admin.php(226): do_action("toplevel_page_CiviCRM")
#29