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https://issues.apache.org/jira/browse/SOLR-4086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13536089#comment-13536089
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Dominik Siebel commented on SOLR-4086:
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[~jdyer]
I noticed a massive decrease in indexing performance when trying a current
checkout from branch_4x after this refactoring. Do you have any explanation for
that? Looking through the code I could not find any changes that would explain
this.
*Some numbers:*
* 1.3M documents
* 4 DIHs
*before* (with my patch from SOLR-2141):
* DIH_1: documents processed: 325130, time taken: 00:25:44.445
* DIH_2: documents processed: 207347, time taken: 01:16:04.607
* DIH_3: documents processed: 184601, time taken: 01:18:00.797
* DIH_4: documents processed: 618580, time taken: 04:17:38.414
*after*:
* DIH_1: documents processed: 324996, time taken: 01:07:47.186
* DIH_2: documents processed: 207347, time taken: 03:31:21.345
* DIH_3: documents processed: 184521, time taken: 03:13:11.313
* DIH_4: documents processed: 618491, time taken: 06:42:54.384
Any idea?
> Refactor DIH - VariableResolver & Evaluator
> -------------------------------------------
>
> Key: SOLR-4086
> URL: https://issues.apache.org/jira/browse/SOLR-4086
> Project: Solr
> Issue Type: Improvement
> Components: contrib - DataImportHandler
> Affects Versions: 4.0
> Reporter: James Dyer
> Assignee: James Dyer
> Priority: Minor
> Fix For: 4.1, 5.0
>
> Attachments: SOLR-4086.patch
>
>
> This simplifies VariableResolver and moves each built-in Evaluator into its
> own class. Compiler warnings / missing generics are fixed. Also, the Locale
> bug with DateFormatEvaluator is solved. Instead of using the machine
> default, the Root Locale is used by default. An optional 3rd parameter
> allows users to specify whatever locale they want.
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