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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5193) SecondaryNameNode does not rollImage because of incorrect calculation of edits modification time.
Date Sun, 08 Feb 2009 21:14:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12671679#action_12671679
] 

Konstantin Shvachko commented on HADOOP-5193:
---------------------------------------------

TestAgentConfig.testInitAdaptors_vs_Checkpoint fails because of HADOOP-5172.
TestTaskLimits timed out. Probably one of those cases that some previous test did not stop
some servers.
Anyway it passes in my own builds and it has nothing to do with SecondaryNameNode at all.

> SecondaryNameNode does not rollImage because of incorrect calculation of edits modification
time.
> -------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-5193
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5193
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.19.0
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>             Fix For: 0.19.1
>
>         Attachments: EditsLength.patch
>
>
> Secondary name-node cannot complete the second phase of the checkpoint because getFsEditsTime()
returns the mod time of {{edits.new}} rather than {{edits}} file.
> The difference is that {{edits}} remains unchanged during the whole checkpoint process
an therefore can serve as an invariant. On the contrary {{edits.new}} is changing all the
time since it is the target of the edits log during checkpoint. So comparison of the mod time
of {{edits.new}} before and after checkpoint fail and name-node does not upload new image
file from the secondary node and does not truncate edits files.

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