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https://issues.apache.org/jira/browse/HDFS-2136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13065408#comment-13065408
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Matt Foley commented on HDFS-2136:
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Eli or Cos, re:
bq. the code contains hooks for generating a fault/behavior and the test code
triggers the hooks
For this to work during DFSMiniCluster startup, it seems to me there has to be
something in the environment (eg, config or something in the File System) that
the hook code can pick up, since there's no other way the hooks can interact
with the test code between the time of SD object creation and the desired time
of failure.
Since that's an ugly solution, I'm thinking AspectJ instead. Am I missing an
easy way to do the above? The issue is specifically testing startup code; I
understand this approach is easy to use once the cluster is in steady state.
Thanks.
> 1073: Fault injection for StorageDirectory failures during read/write of
> FSImage/Edits files
> --------------------------------------------------------------------------------------------
>
> Key: HDFS-2136
> URL: https://issues.apache.org/jira/browse/HDFS-2136
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Matt Foley
>
> Both HDFS-1955 and HDFS-2135 have observed that it is difficult to unit test
> such failures. As a result, regression of HDFS-1955 was only found by
> careful manual review (thanks, atm!). Since 1073 is making broad changes to
> the way these files are read and written, and appropriately putting effort
> into correct error handling, I propose we make also make it possible to
> auto-test that error handling.
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