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https://issues.apache.org/jira/browse/HADOOP-5974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12716420#action_12716420
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Konstantin Boudnik commented on HADOOP-5974:
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I would like to propose the following initial requirements for Fault Injection
(FI) solution for Hadoop:
# Has to be orthogonal to existing source code and test base: no need of direct
code or tests modifications, preferably based on a cross-cut model
# Fully detachable: insert/remove faults from the system without hassle: a
separate build target has to be set to introduce faults in place with a single
command. Removal should be equally easy.
# High level of fault abstractions: implementation of faults' logic has to be
done in high-level language, e.g. Java
# Need to reuse existing unit/functional tests if possible
# Fine grained configuration at runtime: fully deterministic or random
injection of the faults should be configured at runtime through a configuration
file or a set of system properties - no source code modifications or
re-compilation required.
# If an off-shelf solution is used it's better comes under Apache's compatible
open-source license
> Add orthogonal fault injection mechanism/framework
> --------------------------------------------------
>
> Key: HADOOP-5974
> URL: https://issues.apache.org/jira/browse/HADOOP-5974
> Project: Hadoop Core
> Issue Type: Test
> Components: test
> Reporter: Konstantin Boudnik
> Assignee: Konstantin Boudnik
>
> It'd be great to have a fault injection mechanism for Hadoop.
> Having such solution in place will allow to increase test coverage of error
> handling and recovery mechanisms, reduce reproduction time and increase the
> reproduction rate of the problems.
> Ideally, the system has to be orthogonal to the current code and test base.
> E.g. faults have to be injected at build time and would have to be
> configurable, e.g. all faults could be turned off, or only some of them would
> be allowed to happen. Also, fault injection has to be separated from
> production build.
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