I recently upgraded a magento from 1.5 to 1.9 and everything is working except for reindexing of Category Products.
On the admin backend, I just get a general error that the process has failed.
so, I did it via command line using the shell/indexer.php
and this is the output:
[www-data@DevServer shell]$ php -f indexer.php reindexall
Product Attributes index was rebuilt successfully in 00:00:20
Product Prices index was rebuilt successfully in 00:00:06
Catalog URL Rewrites index was rebuilt successfully in 00:02:59
Category Products index process unknown error:
exception 'PDOException' with message 'SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`dev_salveo`.`catalog_category_product_index`, CONSTRAINT `FK_CAT_CTGR_PRD_IDX_CTGR_ID_CAT_CTGR_ENTT_ENTT_ID` FOREIGN KEY (`category_id`) REFERENCES `catalog_category_entity` (`entity_id`) ON )' in /home/www-data/dev.my-domain.co.uk/public_html/lib/Zend/Db/Statement/Pdo.php:228
Stack trace:
#0 /home/www-data/dev.my-domain.co.uk/public_html/lib/Zend/Db/Statement/Pdo.php(228): PDOStatement->execute(Array)
#1 /home/www-data/dev.my-domain.co.uk/public_html/lib/Varien/Db/Statement/Pdo/Mysql.php(110): Zend_Db_Statement_Pdo->_execute(Array)
#2 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Zend/Db/Statement.php(291): Varien_Db_Statement_Pdo_Mysql->_execute(Array)
#3 /home/www-data/dev.my-domain.co.uk/public_html/lib/Zend/Db/Adapter/Abstract.php(480): Zend_Db_Statement->execute(Array)
#4 /home/www-data/dev.my-domain.co.uk/public_html/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('INSERT INTO `ca...', Array)
#5 /home/www-data/dev.my-domain.co.uk/public_html/lib/Varien/Db/Adapter/Pdo/Mysql.php(428): Zend_Db_Adapter_Pdo_Abstract->query('INSERT INTO `ca...', Array)
#6 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Resource/Abstract.php(179): Varien_Db_Adapter_Pdo_Mysql->query('INSERT INTO `ca...')
#7 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Resource/Helper/Mysql4.php(49): Mage_Index_Model_Resource_Abstract->insertFromSelect(Object(Varien_Db_Select), 'catalog_categor...', Array, false)
#8 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Resource/Abstract.php(153): Mage_Index_Model_Resource_Helper_Mysql4->insertData(Object(Mage_Catalog_Model_Resource_Category_Indexer_Product), Object(Varien_Db_Select), 'catalog_categor...', Array, false)
#9 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Resource/Abstract.php(113): Mage_Index_Model_Resource_Abstract->insertFromTable('catalog_categor...', 'catalog_categor...', false)
#10 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Catalog/Model/Resource/Category/Indexer/Product.php(935): Mage_Index_Model_Resource_Abstract->syncData()
#11 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Indexer/Abstract.php(143): Mage_Catalog_Model_Resource_Category_Indexer_Product->reindexAll()
#12 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Process.php(212): Mage_Index_Model_Indexer_Abstract->reindexAll()
#13 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Process.php(260): Mage_Index_Model_Process->reindexAll()
#14 /home/www-data/dev.my-domain.co.uk/public_html/shell/indexer.php(167): Mage_Index_Model_Process->reindexEverything()
#15 /home/www-data/dev.my-domain.co.uk/public_html/shell/indexer.php(215): Mage_Shell_Compiler->run()
#16 {main}
Next exception 'Zend_Db_Statement_Exception' with message 'SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`dev_salveo`.`catalog_category_product_index`, CONSTRAINT `FK_CAT_CTGR_PRD_IDX_CTGR_ID_CAT_CTGR_ENTT_ENTT_ID` FOREIGN KEY (`category_id`) REFERENCES `catalog_category_entity` (`entity_id`) ON ), query was: INSERT INTO `catalog_category_product_index` (`category_id`, `product_id`, `position`, `is_parent`, `store_id`, `visibility`) SELECT `catalog_category_product_index_idx`.`category_id`, `catalog_category_product_index_idx`.`product_id`, `catalog_category_product_index_idx`.`position`, `catalog_category_product_index_idx`.`is_parent`, `catalog_category_product_index_idx`.`store_id`, `catalog_category_product_index_idx`.`visibility` FROM `catalog_category_product_index_idx` ON DUPLICATE KEY UPDATE `category_id` = VALUES(`category_id`), `product_id` = VALUES(`product_id`), `position` = VALUES(`position`), `is_parent` = VALUES(`is_parent`), `store_id` = VALUES(`store_id`), `visibility` = VALUES(`visibility`)' in /home/www-data/dev.my-domain.co.uk/public_html/lib/Zend/Db/Statement/Pdo.php:235
Stack trace:
#0 /home/www-data/dev.my-domain.co.uk/public_html/lib/Varien/Db/Statement/Pdo/Mysql.php(110): Zend_Db_Statement_Pdo->_execute(Array)
#1 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Zend/Db/Statement.php(291): Varien_Db_Statement_Pdo_Mysql->_execute(Array)
#2 /home/www-data/dev.my-domain.co.uk/public_html/lib/Zend/Db/Adapter/Abstract.php(480): Zend_Db_Statement->execute(Array)
#3 /home/www-data/dev.my-domain.co.uk/public_html/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('INSERT INTO `ca...', Array)
#4 /home/www-data/dev.my-domain.co.uk/public_html/lib/Varien/Db/Adapter/Pdo/Mysql.php(428): Zend_Db_Adapter_Pdo_Abstract->query('INSERT INTO `ca...', Array)
#5 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Resource/Abstract.php(179): Varien_Db_Adapter_Pdo_Mysql->query('INSERT INTO `ca...')
#6 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Resource/Helper/Mysql4.php(49): Mage_Index_Model_Resource_Abstract->insertFromSelect(Object(Varien_Db_Select), 'catalog_categor...', Array, false)
#7 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Resource/Abstract.php(153): Mage_Index_Model_Resource_Helper_Mysql4->insertData(Object(Mage_Catalog_Model_Resource_Category_Indexer_Product), Object(Varien_Db_Select), 'catalog_categor...', Array, false)
#8 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Resource/Abstract.php(113): Mage_Index_Model_Resource_Abstract->insertFromTable('catalog_categor...', 'catalog_categor...', false)
#9 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Catalog/Model/Resource/Category/Indexer/Product.php(935): Mage_Index_Model_Resource_Abstract->syncData()
#10 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Indexer/Abstract.php(143): Mage_Catalog_Model_Resource_Category_Indexer_Product->reindexAll()
#11 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Process.php(212): Mage_Index_Model_Indexer_Abstract->reindexAll()
#12 /home/www-data/dev.my-domain.co.uk/public_html/app/code/core/Mage/Index/Model/Process.php(260): Mage_Index_Model_Process->reindexAll()
#13 /home/www-data/dev.my-domain.co.uk/public_html/shell/indexer.php(167): Mage_Index_Model_Process->reindexEverything()
#14 /home/www-data/dev.my-domain.co.uk/public_html/shell/indexer.php(215): Mage_Shell_Compiler->run()
#15 {main}
Catalog Search Index index was rebuilt successfully in 00:00:24
Stock Status index was rebuilt successfully in 00:00:00
Tag Aggregation Data index was rebuilt successfully in 00:00:00
Any idea what this error means? how can I fix it?