Re-fix transaction isolation level #22563
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icewind1991
approved these changes
Sep 3, 2020
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@nickvergessen i've reverted those changes, and still having both problems of #22482 and nextcloud/spreed#4093
For #22482, uploaded 30 files > select them all > delete == Deadlocks on 4 out of 30 deletes. Full log hereFor nextcloud/spreed#4093 same behavior as described in the ticket (browser errors, Room not found messages, etc.)
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🤖 beep boop beep 🤖 Here are the logs for the failed build: Status of 32590: failuremariadb10.4-php7.3Show full logmysql5.6-php7.2Show full log |
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Should i try this fix ? or is this not working ? |
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Please try and report if it works on your setup |
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working on it now. let you know |
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Interestingly for me it works (as discussed in the Talk room). I haven't applied the full patch but just add the one line back: |
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Another "not work" feedback here :#22482 (comment) |
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@nickvergessen I also revert back the changes |
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I did some more tests and it seems to work for some cases. I only get one of the three different stack traces I had seen before, and after a second sync everything is fine - which was not the case before. But it definitely does not solve the issue completely unfortunately. |
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@nickvergessen Looks like this issue happens when you select multiple files and delete them but if you delete files one by one there's no issue from what i can see. |
That's true. |
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@nickvergessen any updates on this? |
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Can you please put the following code as <?php
use Doctrine\DBAL\TransactionIsolationLevel;
require_once __DIR__ . '/lib/versioncheck.php';
require_once __DIR__ . '/lib/base.php';
$db = \OC::$server->getDatabaseConnection();
$c = \OC::$server->getConfig();
var_dump($db->inTransaction());
try {
if ($db->getDatabasePlatform() instanceof \Doctrine\DBAL\Platforms\MySQL80Platform) {
var_dump($db->executeQuery('SELECT @@GLOBAL.transaction_isolation, @@transaction_isolation')->fetchAll());
var_dump($db->setTransactionIsolation(TransactionIsolationLevel::REPEATABLE_READ));
var_dump($db->executeQuery('SELECT @@GLOBAL.transaction_isolation, @@transaction_isolation')->fetchAll());
var_dump($db->setTransactionIsolation(TransactionIsolationLevel::READ_COMMITTED));
var_dump($db->executeQuery('SELECT @@GLOBAL.transaction_isolation, @@transaction_isolation')->fetchAll());
} else {
var_dump($db->executeQuery('SELECT @@GLOBAL.tx_isolation, @@tx_isolation')->fetchAll());
var_dump($db->setTransactionIsolation(TransactionIsolationLevel::REPEATABLE_READ));
var_dump($db->executeQuery('SELECT @@GLOBAL.tx_isolation, @@tx_isolation')->fetchAll());
var_dump($db->setTransactionIsolation(TransactionIsolationLevel::READ_COMMITTED));
var_dump($db->executeQuery('SELECT @@GLOBAL.tx_isolation, @@tx_isolation')->fetchAll());
}
var_dump($db->executeQuery("SHOW GRANTS FOR '" . $c->getSystemValueString('dbuser') . "'@'" . $c->getSystemValueString('dbhost') . "'")->fetchAll());
var_dump($db->executeQuery("SHOW CREATE USER '" . $c->getSystemValueString('dbuser') . "'@'" . $c->getSystemValueString('dbhost') . "'")->fetchAll());
} catch (\Throwable $e) {
var_dump($e);
} |
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Here you go: |
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@nickvergessen Here you go: |
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Is anyone willing to give me access to a failing server? No one of our engineering team can reproduce this locally or on their server, so it's really hard to debug. Use the SSH key from my github profile: https://github.com/nickvergessen.keys |
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@nickvergessen me to send you a meeting invite ? And you can remote in ? |
Just sent you an email. When you're ready to join im on the meeting. |
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Thanks for the help @axheli see email :) |
@nickvergessen: Kannst per Remote Desktop in mein Server schauen. |
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Since this isn't solving it it seems I'm moving this to 21. |
So what do we do with all these sync errors and not able to delete files. At this point the system is not stable. |
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MariaDB config, concated |
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Hi everyone any updates on this? |
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Should be fixed via #23109 now |
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@nickvergessen should this ticket be reopened since its not fixed? or are we referencing #23109 going forwarded |
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This is a Pull request, not an issue and as per your comment it doesn't fix it, so it doesn't need to be reopened. |
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Reverting #18227
It seems that this is somehow causing issues in various setups
Fix #22482
Fix nextcloud/spreed#4093