Fwd: Spark UI circular redirect

[Vincent Ly <vs...@gmail.com>]

Hi,

I'm working with upgrading spark (from 1.6.4 to 2.0.2) and encountered a
strange issue when attempting to access the spark ui of a running job:

17/03/28 15:58:24 DEBUG server.Server: REQUEST GET / on
HttpChannelOverHttp@750bebc7{r=1,c=false,a=DISPATCHED,uri=/}
...
17/03/28 15:58:24 DEBUG server.Server: RESPONSE /  302 handled=true
...
17/03/28 15:58:24 DEBUG server.Server: REQUEST GET /null/ on
HttpChannelOverHttp@750bebc7{r=2,c=false,a=DISPATCHED,uri=/null/}
...
17/03/28 15:58:24 DEBUG server.Server: RESPONSE /null/  302 handled=true
...
17/03/28 15:58:24 DEBUG server.Server: REQUEST GET /null/null/null/ on
HttpChannelOverHttp@750bebc7{r=3,c=false,a=DISPATCHED,uri=/null/null/null/}
...
17/03/28 15:58:24 DEBUG server.Server: RESPONSE /null/null/null/  302
handled=true
...
17/03/28 15:58:24 DEBUG server.Server: REQUEST GET
/null/null/null/null/null/null/null/ on HttpChannelOverHttp@750bebc7{r
=4,c=false,a=DISPATCHED,uri=/null/null/null/null/null/null/null/}

Etc, until a buffer overflow exception.  I'm not familiar with the Spark
code base, but I'm slowly digging through the code to attempt to identify
the cause. In an application that runs with 1.6.4, the request gets
redirected from / to /jobs or so and this does not happen.

Anyone familiar with the code base know where/how the redirect is handled
for the request?

Attached is the debug log (from where I think the http request started and
ended) if anyone is interested.

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