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Shawn Heisey commented on SOLR-8030: ------------------------------------ I was thinking that if we could move Atomic Update processing out of DistributedUpdateProcessor into its own processor, we could cover almost every situation that requires a post-processor. But there may be a complication to doing that -- the core that runs pre-processors (is that a valid term?) may be for the wrong shard, and possibly for the wrong collection, so accessing the original document that's being updated could be a problem. > 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 -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org