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From "Branimir Lambov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10377) AssertionError: attempted to delete non-existing file CommitLog
Date Mon, 12 Oct 2015 09:38:05 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14952859#comment-14952859
] 

Branimir Lambov commented on CASSANDRA-10377:
---------------------------------------------

I think this is a good solution; any new code trying to delete an active segment will go through
{{recycleSegment}} and will also be protected by the atomicity of the {{activeSegments}} queue.

+1 to commit.

> AssertionError: attempted to delete non-existing file CommitLog
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-10377
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10377
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: CentOS 7.1/x64
>            Reporter: Vovodroid
>            Priority: Critical
>         Attachments: 10377.patch
>
>
> After several hours of script tests (create and drop users, keyspaces and tables) exception
is thrown:
> {code}
> ERROR 02:58:39 Failed managing commit log segments. Commit disk failure policy is stop;
terminating thread
> java.lang.AssertionError: attempted to delete non-existing file CommitLog-5-1442599226756.log
> 	at org.apache.cassandra.io.util.FileUtils.deleteWithConfirm(FileUtils.java:122) ~[main/:na]
> 	at org.apache.cassandra.io.util.FileUtils.deleteWithConfirm(FileUtils.java:149) ~[main/:na]
> 	at org.apache.cassandra.db.commitlog.CommitLogSegment.discard(CommitLogSegment.java:314)
~[main/:na]
> 	at org.apache.cassandra.db.commitlog.CommitLogSegmentManager$2.run(CommitLogSegmentManager.java:374)
~[main/:na]
> 	at org.apache.cassandra.db.commitlog.CommitLogSegmentManager$1.runMayThrow(CommitLogSegmentManager.java:155)
~[main/:na]
> 	at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) [main/:na]
> 	at java.lang.Thread.run(Thread.java:745) [na:1.8.0_45]
> {code}
> I added some logs to *deleteWithConfirm* and it showed that this file really was deleted
by previous delete action, i.e. it was second attempt to delete the same log. Commit log with
next number exists in the same time, so log was switched.
> I disabled assert and it seems to have no no bad effect.



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