Hi Kris -

This would be news to me.
I'll need to try and reproduce it but I don't actually think it will
reproduce.
I know that we have HA tests that require HDFS specific HA protocol
knowledge.

I'll let you know.

thanks,

--larry

On Wed, Aug 1, 2018 at 4:21 PM, Kristopher.Kane <kristopher.k...@target.com>
wrote:

> Hi Gatekeepers.
>
> I'm on Knox 0.12 on HDP 2.5.3 and think I've found a bug with WebHDFS
> handling of 'FileAlreadyExists' exceptions.
>
> Whilst working on a fix in WebHdfsHaDispatch, I realized that this
> dispatch is not used and DefaultHaDispatch is used based on some logging I
> added
>
> The `data/services/webhdfs/2.4.0->service.xml` has:
>
>     <dispatch 
> classname="org.apache.hadoop.gateway.hdfs.dispatch.HdfsHttpClientDispatch"
> ha-classname="org.apache.hadoop.gateway.hdfs.dispatch.WebHdfsHaDispatch"/>
>
> How is DefaultHaDispatch selected?  The changes I need to make are context
> isolated to WebHDFS.
>
> Thanks,
>
> Kris
>

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