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Mikhail Khludnev commented on SOLR-4799: ---------------------------------------- bq. hi , can yoou post a patch updated to the trunk please. I'm trying. I'm stuck on commons-codec;1.10 dependency so far. It takes a few days. bq. the code kicks in when the entity attribute "join" is present . So it is a low risk feature anyway absolutely. > SQLEntityProcessor for zipper join > ---------------------------------- > > Key: SOLR-4799 > URL: https://issues.apache.org/jira/browse/SOLR-4799 > Project: Solr > Issue Type: New Feature > Components: contrib - DataImportHandler > Reporter: Mikhail Khludnev > Priority: Minor > Labels: DIH, dataimportHandler, dih > Attachments: SOLR-4799.patch > > > DIH is mostly considered as a playground tool, and real usages end up with > SolrJ. I want to contribute few improvements target DIH performance. > This one provides performant approach for joining SQL Entities with miserable > memory at contrast to > http://wiki.apache.org/solr/DataImportHandler#CachedSqlEntityProcessor > The idea is: > * parent table is explicitly ordered by it’s PK in SQL > * children table is explicitly ordered by parent_id FK in SQL > * children entity processor joins ordered resultsets by ‘zipper’ algorithm. > Do you think it’s worth to contribute it into DIH? > cc: [~goksron] [~jdyer] -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org