We tried it and it works that v2.0 History Server can read the v1.6 logs.

Note that the UI has a regression. When there are too many jobs, the UI
will freeze because the new code tries to cache everything. We submitted a
JIRA: https://issues.apache.org/jira/browse/SPARK-17243

On Thu, Sep 15, 2016 at 11:08 AM, Mario Ds Briggs <mario.bri...@in.ibm.com>
wrote:

> I had checked in 1.6.2 and it doesnt. I didnt check in lower versions. The
> history server logs do show a 'Replaying log path: file:xxx.inprogress'
> when the file is changed , but a refresh on UI doesnt show the new
> jobs/stages/tasks whatever
>
>
>
> thanks
> Mario
>
> [image: Inactive hide details for Ryan Williams ---15/09/2016 11:19:56
> pm---What is meant by: """]Ryan Williams ---15/09/2016 11:19:56 pm---What
> is meant by: """
>
> From: Ryan Williams <ryan.blake.willi...@gmail.com>
> To: Reynold Xin <r...@databricks.com>, Mario Ds Briggs/India/IBM@IBMIN
> Cc: "dev@spark.apache.org" <dev@spark.apache.org>
> Date: 15/09/2016 11:19 pm
> Subject: Re: Compatibility of 1.6 spark.eventLog with a 2.0 History Server
> ------------------------------
>
>
>
> What is meant by:
>
> """
> (This is because clicking the refresh button in browser, updates the UI
> with latest events, where-as in the 1.6 code base, this does not happen)
> """
>
> Hasn't refreshing the page updated all the information in the UI through
> the 1.x line?
>
>
>

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