[jira] [Updated] (TS-3348) Read while write config and range issues

["Bryan Call (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-3348?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bryan Call updated TS-3348:
---------------------------
    Summary: Read while write config and range issues  (was: read while write config and range issues)

> Read while write config and range issues
> ----------------------------------------
>
>                 Key: TS-3348
>                 URL: https://issues.apache.org/jira/browse/TS-3348
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: Core
>            Reporter: William Bardwell
>            Assignee: Alan M. Carroll
>              Labels: review
>             Fix For: sometime
>
>         Attachments: TS-3348.diff
>
>
> We had a number of problems with the read-while-write logic.
> #1) you can't set background fill config options to keep background fill from behaving badly because they are shared too much with read-while-write
> #2) logic around filling range requests out of partial cache entries is too restrictive
> #3) issues around read_while_write not working if there is a transform anywhere
> #4) some related config is not overridable
> So we think that our patch fixes all of these issues...mostly.
> (The background fill timeout doesn't get re-instated if a download switches to read-while-write and then back.  The Range is in cache code doesn't seem write for small things or possibly for seeing the current fragment that is only partially downloaded.)
> But we would like some review of this to see if we are doing anything dangerous/not right/not helpful.
> Might also help TS-2761 and issue around range handling.



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