Thanks for the note, Mohammad.
Let me play around with it and see what is going on there.
Will probably get back to you tomorrow about it.
On Tue, Nov 29, 2016 at 8:02 PM, Mohammad Islam <misla...@yahoo.com> wrote:
> Hi,
>
> I set "default.app.topology.name" in gateway-site.xml to "uber" (my
> default topology name).
> It worked fine if I gave the full URL. The command looks like this "curl
> http://<KNOX_GW_URL>/*gateway/uber/*webhdfs/v1/?op=GETHOMEDIRECTORY'".
>
> However, when I tried with command "curl
> http://<KNOX_GW_URL>/webhdfs/v1/?op=GETHOMEDIRECTORY'".
> I got the HTTP error code 500. I looked into gateway.log file and found
> quite a few error related to rewrite. The exact error messages are shown
> below:
>
> *Error message*
>
> *2016-11-30 00:39:51,565 ERROR hadoop.gateway
> (UrlRewriteProcessor.java:rewrite(169)) - Failed to rewrite URL:
> http://<KNOX_GW_URL>/webhdfs/v1/?op=GETHOMEDIRECTORY, direction: IN via
> rule: WEBHDFS/webhdfs/inbound/namenode/root, status: FAILURE*
> *2016-11-30 00:39:51,565 ERROR hadoop.gateway
> (UrlRewriteProcessor.java:rewrite(169)) - Failed to rewrite URL:
> http://<KNOX_GW_URL>/webhdfs/v1/?op=GETHOMEDIRECTORY, direction: IN via
> rule: WEBHDFS/webhdfs/inbound/namenode/root, status: FAILURE*
>
>
> After that, I modified the webhdfs/2.4.0/rewrite.xml by rewriting the
> following pattern and it worked for short URL but long URL faces the same
> issue.
>
> *Original*:
>
> <rule dir="IN" name="WEBHDFS/webhdfs/inbound/namenode/root" pattern=
> "*://*:**/**/*webhdfs/{version}/?{**}">
> <rewrite template="{$serviceUrl[WEBHDFS]}/{version}/?{**}"/>
> </rule>
>
> *Modified* :
>
> <rule dir="IN" name="WEBHDFS/webhdfs/inbound/namenode/root"
> pattern="*://*:*/webhdfs/{version}/?{**}">
> <rewrite template="{$serviceUrl[WEBHDFS]}/{version}/?{**}"/>
> </rule>
>
>
>
> Overall, the rewrite pattern may be the issue. We will need to support for
> both short and long URL. May be, we can add multiple rewrite rules for each
> route in service.xml.
> Is there any other cleaner way which may work for all cases such as
> webhdfs, yarn, hive, UIs etc?
>
> Regards,
> Mohammad
>
>
>
>
>
>
