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https://issues.apache.org/jira/browse/SOLR-938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12659588#action_12659588
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Kay Kay commented on SOLR-938:
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| I guess caching is pointless for a class which is used only twice for a full
import
We have a much larger query , for which we do a full-import . We split the data
by the primary key range and perform multiple smaller 'full-import's
consolidated together to form a full-import . Hence the necessity for
retaining the instance for the event handlers.
But I am ok with tracking that with a separate jira - if needed. When can we
get this committed the current patch onto the trunk for now.
> DataImportHandler: Add close hooks to the completion of a full-import process
> ------------------------------------------------------------------------------
>
> Key: SOLR-938
> URL: https://issues.apache.org/jira/browse/SOLR-938
> Project: Solr
> Issue Type: New Feature
> Components: contrib - DataImportHandler
> Affects Versions: 1.4
> Environment: JRE 6, Tomcat 6
> Reporter: Kay Kay
> Fix For: 1.4
>
> Attachments: SOLR-938.patch, SOLR-938.patch, SOLR-938.patch
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> Adding a new feature that we need for continuation of a workflow based on a
> full-import procedure. When a full-import completes , the pre-defined hook
> method is called at the end of the same.
> Implementations that need to notified , need to implement the new interface -
> DataImportCloseHook and register themselves in the data config file as
> follows.
> <dataConfig>
> .
> .
> .
> .
> <closeHook type="com.myorg.fullimporter.closeHookImpl1" />
> <closeHook type="com.myorg.fullimporter.closeHookImpl2" />
> </dataConfig>
> A single instance of them is created (as part of DataImporter) during
> instantiation and the same insance is reused across multiple invocations.
> Since the dataImporter is protected by a thread-lock - there is no thred-safe
> guarantee for the implementations of the full-import close hook.
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