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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5195) Offline scrub does not migrate the directory structure on migration from 1.0.x to 1.1.x and causes the keyspace to disappear
Date Thu, 21 Mar 2013 15:09:16 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13609018#comment-13609018
] 

Jonathan Ellis commented on CASSANDRA-5195:
-------------------------------------------

[~krummas], can you review?
                
> Offline scrub does not migrate the directory structure on migration from 1.0.x to 1.1.x
and causes the keyspace to disappear
> ----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-5195
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5195
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.1.9
>            Reporter: Omid Aladini
>             Fix For: 1.1.11
>
>         Attachments: 0001-Flush-newly-migrated-system-CFs.patch, 5195.patch
>
>
> Due to CASSANDRA-4411, upon migration from 1.0.x to 1.1.x containing LCS-compacted sstables,
an offline scrub should be run before Cassandra 1.1.x is started. But Cassandra 1.1.x uses
a new directory structure (CASSANDRA-2749) that offline scrubber doesn't detect or try to
migrate.
> How to reproduce:
> 1- Run cassandra 1.0.12.
> 2- Run stress tool, let Cassandra flush Keyspace1 or flush manually.
> 3- Stop cassandra 1.0.12
> 4- Run ./bin/sstablescrub Keyspace1 Standard1
>   which returns "Unknown keyspace/columnFamily Keyspace1.Standard1" and notice the data
directory isn't migrated.
> 5- Run cassandra 1.1.9. Keyspace1 doesn't get loaded and Cassandra doesn't try to migrate
the directory structure. Also commitlog entries get skipped: "Skipped XXXXX mutations from
unknown (probably removed) CF with id 1000"
> Without the unsuccessful step 4, Cassandra 1.1.9 loads and migrates the Keyspace correctly.
>   

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