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From "Benedict (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9749) CommitLogReplayer continues startup after encountering errors
Date Thu, 09 Jul 2015 14:34:05 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14620588#comment-14620588
] 

Benedict commented on CASSANDRA-9749:
-------------------------------------

Or they could just run repair for the node. But they need to first know there was a problem.
As said on CASSANDRA-7125, I do feel the _default_ behaviour for a database should be to fail
to startup if there are CL errors - except, perhaps, for the very last portion of the last
CL segment, which may not have been fully written to disk.

> CommitLogReplayer continues startup after encountering errors
> -------------------------------------------------------------
>
>                 Key: CASSANDRA-9749
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9749
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Blake Eggleston
>            Assignee: Branimir Lambov
>             Fix For: 2.2.0 rc2
>
>
> There are a few places where the commit log recovery method either skips sections or
just returns when it encounters errors.
> Specifically if it can't read the header here: https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/db/commitlog/CommitLogReplayer.java#L298
> Or if there are compressor problems here: https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/db/commitlog/CommitLogReplayer.java#L314
and here: https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/db/commitlog/CommitLogReplayer.java#L366
> Whether these are user-fixable or not, I think we should require more direct user intervention
(ie: fix what's wrong, or remove the bad file and restart) since we're basically losing data.



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