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From "Sandeep More (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KNOX-1023) nodemanager log links for a running job not working through YARNUI
Date Mon, 02 Oct 2017 14:07:00 GMT

    [ https://issues.apache.org/jira/browse/KNOX-1023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16188082#comment-16188082
] 

Sandeep More commented on KNOX-1023:
------------------------------------

Hello [~vaibhavb], any pointers on this ?

Thanks,
Sandeep 

> nodemanager log links for a running job not working through YARNUI
> ------------------------------------------------------------------
>
>                 Key: KNOX-1023
>                 URL: https://issues.apache.org/jira/browse/KNOX-1023
>             Project: Apache Knox
>          Issue Type: Bug
>    Affects Versions: 0.13.0
>            Reporter: vaibhav beriwala
>             Fix For: 0.14.0
>
>         Attachments: KNOX-1023.patch
>
>
> When nodemanager links are accessed through YARNUI service, it requires the host and
port to be appended in the URI , something like: 
> {code:java}
> https://host:8443/gateway/sandbox/yarn/nodemanager/node/containerlogs/container_e02_1498543212255_0001_01_000001/user?host=nm-host&port=8042
> {code}
> When I'm coming from the RM page, this link is rendered as an absolute one, so the rewrite
rule works fine and appends the host and port. However, when I'm on the NM page itself, the
URLs are not absolute(the URL's on NM page are relative), so a different rewrite rule applies:
> {code:java}
> DEBUG hadoop.gateway (UrlRewriteProcessor.java:rewrite(164)) - Rewrote URL: /node/containerlogs/container_e01_1498485266952_0006_01_000001/hiyer
qa3july/stderr/?start=-4096, direction: OUT via implicit rule: YARNUI/yarn/outbound/node to
URL: https://host:8443/gateway/sandbox/yarn/node/containerlogs/container_e01_1498485266952_0006_01_000001/user/stderr
> {code}
> As you can see, this link does not contain the host=nm-host&port=8042 at the end
of query string, so it does not work. This affects log links for running tasks, and links
for the nodemanager itself.
> So, the links on NM page of type 
> {code:java}
> href=/syslog
> {code}
>  gets transformed to 
> {code:java}
> https://host:8443/gateway/sandbox/yarn/nodemanager/node/containerlogs/container_e02_1498543212255_0001_01_000001/user/syslog
> {code}
> whereas it should have been transformed to 
> {code:java}
> https://host:8443/gateway/sandbox/yarn/nodemanager/node/containerlogs/container_e02_1498543212255_0001_01_000001/user/syslog?host=nm-host&port=8042
> {code}
> One possible solution I could think of is appending the query string of the *current*
page to the link, but I couldn't see how to do that in a rewrite rule.
> Also, if you can provide some code pointers I may look into it. :)



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