I am using the Block Join Query Parser with success, following the example on:
https://cwiki.apache.org/confluence/display/solr/Other+Parsers#OtherParsers-BlockJoinQueryParsers As this example shows, each parent document can have a number of documents embedded, and each document, be it a parent or a child, has its own unique identifier. Now I would like to update some of the parent documents, and read that there are horror stories with duplicate documents, scrambled data etc., the two prominent JIRA entries for this are: https://issues.apache.org/jira/browse/SOLR-6700 https://issues.apache.org/jira/browse/SOLR-6096 My question is, how do you usually update such documents, for example to update a value for the parent or a value for one of its children? I tried to repost the whole modified document (the parent and ALL of its children as one file), and it seems to work on a small toy example, but of course I cannot be sure for a larger instance with thousands of documents, and I would like to know if this is the correct way to go or not. To make it clear, if originally I used bin/solr post on on the following file: <add> <doc> <field name="id">1</field> <field name="title">Solr has block join support</field> <field name="content_type">parentDocument</field> <doc> <field name="id">2</field> <field name="comments">SolrCloud supports it too!</field> </doc> </doc> </add> Now I could do bin/solr post on a file: <add> <doc> <field name="id">1</field> <field name="title">Updated field: Solr has block join support</field> <field name="content_type">parentDocument</field> <doc> <field name="id">2</field> <field name="comments">Updated field: SolrCloud supports it too!</field> </doc> </doc> </add> Will this avoid these inconsistent and scrambled or duplicate data on Solr instances as discussed in the JIRAs? How do you usually do this? Thanks for any help or hints. Tom
