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https://issues.apache.org/jira/browse/HADOOP-4282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12642319#action_12642319
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Kan Zhang commented on HADOOP-4282:
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Note that with HADOOP-4284 now committed, this bug can be caught in junit test
by trying to access a non-existent file in either /logs or /static directories.
In other words, whether the tested file exists or not doesn't matter.
> User configurable filter fails to filter accesses to certain directories
> ------------------------------------------------------------------------
>
> Key: HADOOP-4282
> URL: https://issues.apache.org/jira/browse/HADOOP-4282
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.19.0
> Reporter: Kan Zhang
>
> Hadoop-3854 introduced a framework where users can add filters to the HTTP
> server to filter part of the HTTP interface, i.e., those user facing URLs.
> Directories "/logs/*" and "/static/*" are supposed to be filtered. However,
> files in those directories can be retrieved without triggering my configured
> filter. The corresponding junit test didn't catch the bug for 2 reasons. 1)
> it didn't try to access files in those 2 directories. 2) Even if it did, it
> might still fail to catch the bug, since according to my observation, only
> when accessing existent files my filter is bypassed. When accessing
> non-existent files (which is what the junit test does), my filter is
> triggered as expected.
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