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https://issues.apache.org/jira/browse/HDFS-17927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siyao Meng updated HDFS-17927:
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Status: Patch Available (was: Open)
> Make TestDiskError.testShutdown use deterministic volume failure injection
> --------------------------------------------------------------------------
>
> Key: HDFS-17927
> URL: https://issues.apache.org/jira/browse/HDFS-17927
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: test
> Reporter: Siyao Meng
> Assignee: Siyao Meng
> Priority: Major
>
> `TestDiskError.testShutdown()` currently drives DataNode shutdown by
> repeatedly creating files until `dn.isDatanodeUp()` becomes false. If
> shutdown does not happen promptly, the test can loop for a long time and
> generate excessive logs.
> Replaces file-create loop with deterministic failure injection for both
> DataNode data dirs, then explicitly runs `dn.checkDiskError()` and waits for
> the DataNode to exit.
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