XF 1.2 max_allowed_packet Errors


Well-known member
Hi all, I'm upgrading my site to Xenforo 1.2 finally. I thought that, while I had the site down, I would run the long overdue process of updating the search index. When I tried running it I ran into an error with the max_allowed_packets. I'm waiting on the guy who owns the site to increase it, but when I try to do other things through the admincp I'm getting this error again (probably because the rebuild is incomplete).

Is there any way I can halt the rebuild until I can get the error fixed?

Edit: Here's the full error text:
Mysqli prepare error: Got a packet bigger than 'max_allowed_packet' bytes

    Zend_Db_Statement_Mysqli->_prepare() in Zend/Db/Statement.php at line 115
    Zend_Db_Statement->__construct() in Zend/Db/Adapter/Mysqli.php at line 381
    Zend_Db_Adapter_Mysqli->prepare() in Zend/Db/Adapter/Abstract.php at line 478
    Zend_Db_Adapter_Abstract->query() in XenForo/Search/SourceHandler/MySqlFt.php at line 110
    XenForo_Search_SourceHandler_MySqlFt->_pushToIndex() in XenForo/Search/SourceHandler/MySqlFt.php at line 74
    XenForo_Search_SourceHandler_MySqlFt->insertIntoIndex() in XenForo/Search/Indexer.php at line 44
    XenForo_Search_Indexer->insertIntoIndex() in XenForo/Search/DataHandler/Post.php at line 61
    XenForo_Search_DataHandler_Post->_insertIntoIndex() in XenForo/Search/DataHandler/Abstract.php at line 238
    XenForo_Search_DataHandler_Abstract->insertIntoIndex() in XenForo/Search/DataHandler/Post.php at line 133
    XenForo_Search_DataHandler_Post->quickIndex() in XenForo/Search/DataHandler/Post.php at line 103
    XenForo_Search_DataHandler_Post->rebuildIndex() in XenForo/Deferred/SearchIndex.php at line 72
    XenForo_Deferred_SearchIndex->execute() in XenForo/Model/Deferred.php at line 243
    XenForo_Model_Deferred->runDeferred() in XenForo/Model/Deferred.php at line 369
    XenForo_Model_Deferred->_runInternal() in XenForo/Model/Deferred.php at line 322
    XenForo_Model_Deferred->run() in XenForo/ControllerAdmin/Tools.php at line 147
    XenForo_ControllerAdmin_Tools->actionRunDeferred() in XenForo/FrontController.php at line 337
    XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134
    XenForo_FrontController->run() in /home/khvids/public_html/admin.php at line 13
Last edited:


Well-known member
Got the process to recognize itself as finished by running a small part (profile post comments) instead of the whole big thing, just until I can get that limit raised.


XenForo developer
Staff member
That's a very small value then -- we don't send queries over 500K bytes usually. MySQL's default is over 1MB (and I've never seen it be decreased before).

Raising it at least to the default value shouldn't be an issue.