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https://issues.apache.org/jira/browse/SOLR-8030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17071019#comment-17071019
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David Smiley commented on SOLR-8030:
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bq. Not able to do this, since I will receive error about that this field not
exists in schema, so this technical field should still be capable for normal
processing. But yes, as you mention, we will throw away this field in our
post-processor, so it will not go in index at the end.
Can you share a stacktrace if you are sure? If your URP correctly removed the
field from the SolrInputDocument, it'll never be "seen" by the schema in
DocumentBuilder which is probably where such an exception might get thrown by.
Perhaps there may be some earlier URP that consults the schema but not normally.
> Transaction log does not store the update chain (or req params?) used for
> updates
> ---------------------------------------------------------------------------------
>
> Key: SOLR-8030
> URL: https://issues.apache.org/jira/browse/SOLR-8030
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 5.3
> Reporter: Ludovic Boutros
> Priority: Major
> Attachments: SOLR-8030.patch
>
>
> Transaction Log does not store the update chain, or any other details from
> the original update request such as the request params, used during updates.
> Therefore tLog uses the default update chain, and a synthetic request, during
> log replay.
> If we implement custom update logic with multiple distinct update chains that
> use custom processors after DistributedUpdateProcessor, or if the default
> chain uses processors whose behavior depends on other request params, then
> log replay may be incorrect.
> Potentially problematic scenerios (need test cases):
> * DBQ where the main query string uses local param variables that refer to
> other request params
> * custom Update chain set as {{default="true"}} using something like
> StatelessScriptUpdateProcessorFactory after DUP where the script depends on
> request params.
> * multiple named update chains with diff processors configured after DUP and
> specific requests sent to diff chains -- ex: ParseDateProcessor w/ custom
> formats configured after DUP in some special chains, but not in the default
> chain
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