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https://issues.apache.org/jira/browse/SOLR-2204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13196526#comment-13196526
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Jan Høydahl commented on SOLR-2204:
-----------------------------------
I think there's an acceptable workaround for that too. You disable replication,
then upgrade master, then upgrade slave(s) and then enable replication again.
Disabling/enabling polling can be done over HTTP so it's easily scriptable.
> 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: 3.6, 4.0
>
> Attachments: SOLR-2204.patch, SOLR-2204.patch
>
>
> 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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