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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GEODE-3153) Client receives duplicate events during rolling upgrade
Date Fri, 07 Jul 2017 23:22:00 GMT

    [ https://issues.apache.org/jira/browse/GEODE-3153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16078823#comment-16078823
] 

ASF subversion and git services commented on GEODE-3153:
--------------------------------------------------------

Commit b4ebcbac1d4940c73d5f10b29a21a2b384c14373 in geode's branch refs/heads/develop from
[~hitesh.khamesra]
[ https://git-wip-us.apache.org/repos/asf?p=geode.git;h=b4ebcba ]

GEODE-3153 Client receives duplicate events during rolling upgrade

The previous fix worked fine for 1.0.0 and 1.1.0 clients but there are
old GemFire 8.2 clients still in use that the fix did not work for.
This patch changes the serialization to always send UUID bytes to pre
Version.GFE_90 (1.0.0-incubating) clients.

Added unit for it


> Client receives duplicate events during rolling upgrade
> -------------------------------------------------------
>
>                 Key: GEODE-3153
>                 URL: https://issues.apache.org/jira/browse/GEODE-3153
>             Project: Geode
>          Issue Type: Bug
>          Components: client queues
>            Reporter: Dan Smith
>             Fix For: 1.2.0
>
>
> During a rolling upgrade from 1.1 to 1.2, we see 1.1 client receive duplicate events.
> This is the scenario
> 1) 1.1 peer is doing puts
> 2) 1.1 client has registered interest, and is connected to a 1.1 server
> 3) 1.1 server is upgraded to a 1.2 server
> 4) The client may receive some of the events that are being put twice.
> Looking further, it appears that when a put goes through a 1.1 server to a 1.1 client,
the member id includes a 17 byte unique id as the last part of the serialized data. When the
put goes through a 1.2 server, those 17 bytes become zeros.



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