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From "Yonik Seeley (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-3215) We should clone the SolrInputDocument before adding locally and then send that clone to replicas.
Date Wed, 14 Mar 2012 01:52:37 GMT

    [ https://issues.apache.org/jira/browse/SOLR-3215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13228889#comment-13228889
] 

Yonik Seeley commented on SOLR-3215:
------------------------------------

Not sure I understand the problem this is solving.  _version_ is added to the SolrInputDocument
and then that can be indexed locally and sent to replicas.  DistributedUpdateProcessor should
come right before RunUpdateProcessor (or are you assuming we might support random update processors
in-between? Are there use cases for this?)
                
> We should clone the SolrInputDocument before adding locally and then send that clone
to replicas.
> -------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-3215
>                 URL: https://issues.apache.org/jira/browse/SOLR-3215
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Mark Miller
>            Assignee: Mark Miller
>             Fix For: 4.0
>
>         Attachments: SOLR-3215.patch
>
>
> If we don't do this, the behavior is a little unexpected. You cannot avoid having other
processors always hit documents twice unless we support using multiple update chains. We have
another issue open that should make this better, but I'd like to do this sooner than that.
We are going to have to end up cloning anyway when we want to offer the ability to not wait
for the local add before sending to replicas.
> Cloning with the current SolrInputDocument, SolrInputField apis is a little scary - there
is an Object to contend with - but it seems we can pretty much count on that being a primitive
that we don't have to clone?

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