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From "Shawn Heisey (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-2204) Cross-version replication broken by new javabin format
Date Thu, 28 Oct 2010 12:54:19 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12925794#action_12925794
] 

Shawn Heisey commented on SOLR-2204:
------------------------------------

All of the Solr documentation I've read says that you're supposed to upgrade your slaves first,
test it completely, then upgrade your masters.  This is a sensible approach, but it's impossible
currently.

We can't do complete tests of our application against a single test server, we need to test
against the entire distributed index.  The amount of hardware required for an entire copy
of the index costs too much to have in a lab environment.


> Cross-version replication broken by new javabin format
> ------------------------------------------------------
>
>                 Key: SOLR-2204
>                 URL: https://issues.apache.org/jira/browse/SOLR-2204
>             Project: Solr
>          Issue Type: Bug
>          Components: replication (java)
>    Affects Versions: 3.1
>         Environment: Linux idxst0-a 2.6.18-194.3.1.el5.centos.plusxen #1 SMP Wed May
19 09:59:34 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
> java version "1.6.0_20"
> Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
> Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode)
>            Reporter: Shawn Heisey
>             Fix For: Next
>
>
> Slave server is branch_3x, revision 1027974.  Master server is 1.4.1.  Replication fails
because of the new javabin format.
> SEVERE: Master at: http://HOST:8983/solr/live/replication is not available. Index fetch
failed. Exception: Invalid version or the data in not in 'javabin' format
> Switching Solr's internally generated requests to XML, or adding support for both javabin
versions would get rid of this problem.  I do not know how to do either of these things.

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