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https://issues.apache.org/jira/browse/HDFS-13314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16416046#comment-16416046
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Rushabh S Shah commented on HDFS-13314:
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bq. perhaps we could do some ugly fault injection to create dangling references
and corrupted diff lists in the image.
I am not that much concerned with the test case showing how the image is
corrupted.
I would like to see a test case to verify the following 2 scenarios
* if numErrors == 0 then namenode should not exit.
* if numErrors > 0 then namenode should exit.
Quickly going through ExitUtil class, I see you can use
{{ExitUtil#disableSystemExit}}.
This will save the exception somewhere in ExitUtil class.
{{ExitUtil#terminate}} will throw an {{ExitException}}.
Hope this helps.
> NameNode should optionally exit if it detects FsImage corruption
> ----------------------------------------------------------------
>
> Key: HDFS-13314
> URL: https://issues.apache.org/jira/browse/HDFS-13314
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Priority: Major
> Attachments: HDFS-13314.01.patch, HDFS-13314.02.patch,
> HDFS-13314.03.patch, HDFS-13314.04.patch, HDFS-13314.05.patch
>
>
> The NameNode should optionally exit after writing an FsImage if it detects
> the following kinds of corruptions:
> # INodeReference pointing to non-existent INode
> # Duplicate entries in snapshot deleted diff list.
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