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https://issues.apache.org/jira/browse/HDFS-14284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16969200#comment-16969200
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Ayush Saxena commented on HDFS-14284:
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Checked in further, Observed while unwrapping only the exception message is
passed to RouterIOException, not the parameters. So the routerID can't be
forwarded.
So, getting router ID from the exception at the client doesn't seems to be as
such possible, Until and unless we do some string logic and extract routerId
and set in the RIOE(String msg) constructor else there is no benefit having
separate RIOE
[~elgoiri] thoughts?
> RBF: Log Router identifier when reporting exceptions
> ----------------------------------------------------
>
> Key: HDFS-14284
> URL: https://issues.apache.org/jira/browse/HDFS-14284
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Íñigo Goiri
> Assignee: hemanthboyina
> Priority: Major
> Attachments: HDFS-14284.001.patch, HDFS-14284.002.patch,
> HDFS-14284.003.patch, HDFS-14284.004.patch, HDFS-14284.005.patch,
> HDFS-14284.006.patch, HDFS-14284.007.patch, HDFS-14284.008.patch
>
>
> The typical setup is to use multiple Routers through
> ConfiguredFailoverProxyProvider.
> In a regular HA Namenode setup, it is easy to know which NN was used.
> However, in RBF, any Router can be the one reporting the exception and it is
> hard to know which was the one.
> We should have a way to identify which Router/Namenode was the one triggering
> the exception.
> This would also apply with Observer Namenodes.
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