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https://issues.apache.org/jira/browse/HADOOP-7967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daryn Sharp updated HADOOP-7967:
--------------------------------
Attachment: HADOOP-7967.newapi.3.patch
# Added the provided javadocs patch
# Completely removed {{getDelegationTokens}} methods, even for 23. Might as
well find bugs in the upper stack components now than later...
# As suggested, {{addDelegationTokens(renewer,null)}} semantically behaves like
the removed {{getDelegationTokens(renewer)}}
# Create {{TestFileSystemTokens}} in common and move most of the applicable
token fetching tests into it from mapreduce. Tests are now more comprehensive
with greater coverage.
# Remove GETDELEGATIONTOKENS from httpfs since it was removed from webhdfs
# Downgraded visibility of {{FileSystem#getDelegationToken}} to protected
#* caused a lot of test updates
#* exposed multi-token bug in fetchdt
#* had to update webhdfs token renewal
> Need generalized multi-token filesystem support
> -----------------------------------------------
>
> Key: HADOOP-7967
> URL: https://issues.apache.org/jira/browse/HADOOP-7967
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs, security
> Affects Versions: 0.23.1, 0.24.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Critical
> Attachments: HADOOP-7967-2.patch, HADOOP-7967-3.patch,
> HADOOP-7967-4.patch, HADOOP-7967-compat.patch, HADOOP-7967.newapi.2.patch,
> HADOOP-7967.newapi.3.patch, HADOOP-7967.newapi.patch, HADOOP-7967.patch,
> hadoop7967-javadoc.patch
>
>
> Multi-token filesystem support and its interactions with the MR
> {{TokenCache}} is problematic. The {{TokenCache}} tries to assume it has the
> knowledge to know if the tokens for a filesystem are available, which it
> can't possibly know for multi-token filesystems. Filtered filesystems are
> also problematic, such as har on viewfs. When mergeFs is implemented, it too
> will become a problem with the current implementation. Currently
> {{FileSystem}} will leak tokens even when some tokens are already present.
> The decision for token acquisition, and which tokens, should be pushed all
> the way down into the {{FileSystem}} level. The {{TokenCache}} should be
> ignorant and simply request tokens from each {{FileSystem}}.
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