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  1. Solr
  2. SOLR-6892

Improve the way update processors are used and make it simpler


    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 5.1, 6.0
    • Component/s: None
    • Labels:


      The current update processor chain is rather cumbersome and we should be able to use the updateprocessors without a chain.

      The scope of this ticket is

      • A new tag <updateProcessor> becomes a toplevel tag and it will be equivalent to the <processor> tag inside <updateRequestProcessorChain> . The only difference is that it should require a name attribute. The <updateProcessorChain> tag will continue to exist and it should be possible to define <processor> inside as well . It should also be possible to reference a named URP in a chain.
      • processors will be added in the request with their names . Example processor=a,b,c , post-processor=x,y,z . This creates an implicit chain of the named URPs the order they are specified
      • There are multiple request parameters supported by update request
        • processor : This chain is executed executed at the leader right before the LogUpdateProcessorFactory + DistributedUpdateProcessorFactory . The replicas will not execute this.
        • post-processor : This chain is executed right before the RunUpdateProcessor in all replicas , including the leader
      • What happens to the update.chain parameter ? update.chain will be honored . The implicit chain is created by merging both the update.chain and the request params. post-processor will be inserted right before the RunUpdateProcessorFactory in the chain. and processor will be inserted right before the LogUpdateProcessorFactory,DistributedUpdateProcessorFactory


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              • Assignee:
                noble.paul Noble Paul
                noble.paul Noble Paul
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                • Created: