Adar Dembo has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/6348 )

Change subject: KUDU-1918 Prevent hijacking of scanner IDs
......................................................................


Patch Set 3:

> One of Todd's comments from KUDU-1843 was:
>
>   Caching the original username turns out to be a little tricky, since the 
> WAL doesn't record the original username, and thus when reconstructing the 
> request cache during tablet bootstrap we don't have enough information to do 
> so. I think making the UUIDs unpredictable is probably a better approach.
>
> That's still an issue, no?

My mistake; I had followed KUDU-1918 to KUDU-1843, and didn't realize that the 
conversation shifted to talking about _writes_ (which are cached in the request 
cache). Scans aren't cached, so this isn't an issue here.

KUDU-1843 remains at large.


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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ic91fa0ca471bd674e35aa2f8de3806b88ad4b3b4
Gerrit-Change-Number: 6348
Gerrit-PatchSet: 3
Gerrit-Owner: Todd Lipcon <[email protected]>
Gerrit-Reviewer: Adar Dembo <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Andrew Wong <[email protected]>
Gerrit-Reviewer: Dan Burkert <[email protected]>
Gerrit-Reviewer: David Ribeiro Alves <[email protected]>
Gerrit-Reviewer: Hao Hao <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Comment-Date: Fri, 26 Oct 2018 17:52:18 +0000
Gerrit-HasComments: No

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