Failure in invalidating cache

While using the sss_cache command is preferable, it is also possible to clear the cache by simply deleting the corresponding cache files.Before doing this it is suggested that the SSSD service be stopped.The SSSD cache can easily be removed by simply deleting the files where cached records are stored, or it can be done more cleanly with the sss_cache tool which will invalidate specified records from the cache. This causes the database engine (e.g., Inno DB) to acquire a row lock on those records, which it doesn't release until the end of the transaction.Also saw the comment above about the presave thing only after writing it but I guess there's still a bit of useful info there, so leaving it there. But that would only solve the entity-specific case. But it's possible for long-running DB queries/transactions to occur for things other than entities (and perhaps also cache tag invalidations to occur), and hence for the same deadlocks to occur.So we figured we might as well only propose the more general approach.However, if there are more child nodes that need to be saved, or other slow hook implementations that need to be performed, prior to the end of the transaction, then these locks could last 10, 20, or more seconds.

failure in invalidating cache-61failure in invalidating cache-25

The cache can be cleared with the sss_cache utility which is used for performing cache cleanup by invalidating records in the SSSD cache.IOW: the root cause turned out to be something so absolutely trivial that it feels painful to have spent the better part of a day finding it. b/core/modules/system/tests/modules/entity_test/entity_test.module @@ -514,6 514,15 @@ function entity_test_entity_form_display_alter(Entity Form Display $form_display, if ($entity instanceof \Drupal\entity_test\Entity\Entity Test) { \Drupal\user\Entity\User::create([ 'name' = b/core/lib/Drupal/Core/Database/@@ -1191,6 1198,22 @@ public function pop Transaction($name) { /** * Registers a pre-root transaction commit callback.However, it was so very difficult to find because the exception was not showing up anywhere; it was being caught prematurely by method, and so on. * * @param callable $callback * The callback to invoke. public function register Pre Root Transaction Commit Callback(callable $callback) a while ago, I remember we do have support for nested transactions, which for example is the usecase of nested entity saving.) Let's see what testbot says…SQLSTATE[21S01]: Insert value list does not match column list: 1136 Column count doesn't match value count at row 1: INSERT INTO (cid, expire, created, tags, checksum, data, serialized) VALUES () ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized); Array ( ) 11 Query INSERT INTO test20492877cache_data (cid, expire, created, tags, checksum, data, serialized) VALUES () ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized) b/core/lib/Drupal/Core/Cache/Database @@ -236,6 236,11 @@ protected function do Set Multiple(array $items) { // @see \Drupal\Core\Cache\Cache Tags Checksum Interface:: CHECKSUM_WHILE_IN_TRANSACTION if ($fields['checksum'] === Cache Tags Checksum Interface:: CHECKSUM_WHILE_IN_TRANSACTION) …which can result in there then being zero rows to write, but the patch didn't yet catch that case.

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