[SOLR-3360] Problem with DataImportHandler multi-threaded

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.6
• Fix Version/s: 3.6.1

Environment

Solr 3.6.0, Apache Tomcat 6.0.20, jdk1.6.0_15, Windows XP

• Assignee: James Dyer
• Reporter: Claudio R
• Created: 16/Apr/12 15:14
• Updated: 22/Jul/12 16:05
• Resolved: 23/Apr/12 21:07

Description

Hi,

If I use dataimport with 1 thread, I got:

<lst name="statusMessages">
<str name="Total Requests made to DataSource">5001</str>
<str name="Total Rows Fetched">1000</str>
<str name="Total Documents Skipped">0</str>
<str name="Full Dump Started">2012-04-16 11:21:57</str>
<str name="">Indexing completed. Added/Updated: 1000 documents. Deleted 0 documents.</str>
<str name="Committed">2012-04-16 11:23:19</str>
<str name="Total Documents Processed">1000</str>
<str name="Time taken">0:1:22.390</str>
</lst>

If I use datamport with 10 threads, I got:

<lst name="statusMessages">
<str name="Total Requests made to DataSource">0</str>
<str name="Total Rows Fetched">10000</str>
<str name="Total Documents Skipped">0</str>
<str name="Full Dump Started">2012-04-16 11:31:43</str>
<str name="">Indexing completed. Added/Updated: 10000 documents. Deleted 0 documents.</str>
<str name="Committed">2012-04-16 11:41:50</str>
<str name="Total Documents Processed">10000</str>
<str name="Time taken">0:10:7.586</str>
</lst>

The configuration of 10 threads consumed 10 times longer than the configuration with 1 thread.
I have 1000 records in the database.
My db-data-config.xml is shown below:

<?xml version="1.0" encoding="UTF-8" ?>
<dataConfig>
<dataSource driver="com.microsoft.sqlserver.jdbc.SQLServerDriver" url="jdbc:sqlserver://200.XXX.XXX.XXX:1433;databaseName=test" user="user" password="pass"/>
<document>
<entity name="indice" rootEntity="true" threads="10" transformer="RegexTransformer,TemplateTransformer" query="select top 1000 i.id_indice, i.a, i.b from indice i where i.status = 'I'" deltaImportQuery="i.id_indice, i.a, i.b from indice i where id_indice in ('${dataimporter.delta.id_indice}')" deltaQuery="select id_indice from indice where status='I' and data_hora_modificacao >= convert(datetime, '${dataimporter.last_index_time}', 120)" deletedPkQuery="select id_indice from indice where status='D' and data_hora_modificacao >= convert(datetime, '${dataimporter.last_index_time}', 120)">
<field column="id_indice" name="id_indice" />
<field column="a" name="a" />
<field column="b" name="b" />
<entity name="filtro" transformer="RegexTransformer,TemplateTransformer" query="select categoria, sub_categoria from filtro where indice_id_indice = '${indice.id_indice}'">
<field name="filtro_categoria" column="categoria" />
<field name="filtro_sub_categoria" column="sub_categoria" />
<field name="nv_sub_categoria" column="nv_sub_categoria" template="${filtro.categoria}|${filtro.sub_categoria}" />
</entity>
<entity name="pagina_relacionada" query="select url from pagina_relacionada where indice_id_indice = '${indice.id_indice}'">
<field name="pagina_relacionada_url" column="url" />
</entity>
<entity name="veja_mais" query="select chamada, url from veja_mais where indice_id_indice = '${indice.id_indice}'">
<field name="veja_mais_chamada" column="chamada" />
<field name="veja_mais_url" column="url" />
</entity>
<entity name="video" query="select url from video where indice_id_indice = '${indice.id_indice}'">
<field name="video_url" column="url" />
</entity>
<entity name="galeria" query="select url from galeria where indice_id_indice = '${indice.id_indice}'">
<field name="galeria_url" column="url" />
</entity>
</entity>
</document>
</dataConfig>

Thanks.