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From "Robert Zotter (JIRA)" <j...@apache.org>
Subject [jira] Updated: (SOLR-1927) DocBuilder Inefficiency
Date Tue, 25 May 2010 19:24:30 GMT

     [ https://issues.apache.org/jira/browse/SOLR-1927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Zotter updated SOLR-1927:
--------------------------------

    Attachment: SOLR-1927.patch

> DocBuilder Inefficiency
> -----------------------
>
>                 Key: SOLR-1927
>                 URL: https://issues.apache.org/jira/browse/SOLR-1927
>             Project: Solr
>          Issue Type: Improvement
>    Affects Versions: 1.4
>            Reporter: Robert Zotter
>            Priority: Trivial
>         Attachments: SOLR-1927.patch
>
>
> I am looking into collectDelta method in DocBuilder.java and I noticed that
> to determine the deltaRemoveSet it currently loops through the whole
> deltaSet for each deleted row.
> Does anyone else agree with the fact that this is quite inefficient?
> For delta-imports with a large deltaSet and deletedSet I found a
> considerable improvement in speed if we just save all deleted keys in a set.
> Then we just have to loop through the deltaSet once to determine which rows
> should be removed by checking if the deleted key set contains the delta row
> key.

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