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https://issues.apache.org/jira/browse/MAPREDUCE-2764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daryn Sharp updated MAPREDUCE-2764:
-----------------------------------
Attachment: MAPREDUCE-2764.patch
FS tokens store a uri to the fs in the service field.
Greatly simplified DelegationTokenRenewal to find the FileSystem based on
token's service uri.
Tokens can be queried for authority which will use the service's uri or the raw
value.
Tokens have a standard method to set the service based on InetSocketAddress
instead of all token producers having a copy-n-paste... Will greatly ease the
Small redesign of TokenSelectors to commonize the classes, add support to
search based on authority.
IPC client searches based on authority.
Fixup hftp/hftps to be a better filesystem citizen, more work may need to be
done to avoid the automatic token renewal.
> Fix renewal of dfs delegation tokens
> ------------------------------------
>
> Key: MAPREDUCE-2764
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2764
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Fix For: 0.20.205.0
>
> Attachments: MAPREDUCE-2764.patch
>
>
> The JT may have issues renewing hftp tokens which disrupt long distcp jobs.
> The problem is the JT's delegation token renewal code is built on brittle
> assumptions. The token's service field contains only the "ip:port" pair.
> The renewal process assumes that the scheme must be hdfs. If that fails due
> to a {{VersionMismatchException}}, it tries https based on another assumption
> that it must be hftp if it's not hdfs. A number of other exceptions, most
> commonly {{IOExceptions}}, can be generated which fouls up the renewal since
> it won't fallback to https.
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