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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-2520) Garbage collector deleted everything when given bad input
Date Mon, 24 Mar 2014 17:10:46 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-2520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13945362#comment-13945362
] 

ASF subversion and git services commented on ACCUMULO-2520:
-----------------------------------------------------------

Commit ca3f77894466caddf71c89d78a98f9fee8fc7fd8 in accumulo's branch refs/heads/1.5.2-SNAPSHOT
from [~keith_turner]
[ https://git-wip-us.apache.org/repos/asf?p=accumulo.git;h=ca3f778 ]

ACCUMULO-2520 made GC validate data read from !METADATA table


> Garbage collector deleted everything when given bad input
> ---------------------------------------------------------
>
>                 Key: ACCUMULO-2520
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2520
>             Project: Accumulo
>          Issue Type: Bug
>    Affects Versions: 1.4.0
>            Reporter: Keith Turner
>            Assignee: Keith Turner
>            Priority: Critical
>             Fix For: 1.4.5, 1.5.2, 1.6.0
>
>
> Patch v3 of the upgrade from ACCUMULO-2145 had a test that did the following before upgrade.
> {noformat}
> root@testUp> table !METADATA
> root@testUp !METADATA> grant Table.WRITE -u root 
> root@testUp !METADATA> insert ~del testDel test valueTest
> {noformat}
> This is a malformed delete entry.  Accumulo code should not delete such entries.  When
the 1.5.1 garbage collector saw this it did the following.
> {noformat}
> 2014-03-20 18:20:05,359 [gc.SimpleGarbageCollector] DEBUG: Deleting /accumuloTest/tables
> 2014-03-20 18:20:05,359 [gc.SimpleGarbageCollector] DEBUG: Deleting /accumuloTest/tables/!0/default_tablet/F0000009.rf
> 2014-03-20 18:20:05,360 [gc.SimpleGarbageCollector] DEBUG: Deleting /accumuloTest/tables/!0/table_info/F000000b.rf
> {noformat}
> GC should validate that delete entries are paths of the expected length.  I have confirmed
this bug exist in 1.5.1.  I am assuming it exist in 1.4 and 1.6 branches.



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