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Posted to dev@lucene.apache.org by "Erick Erickson (JIRA)" <ji...@apache.org> on 2013/03/16 19:48:12 UTC
[jira] [Resolved] (SOLR-922) Solr WebApp wide Executor for better
efficient management of threads , separating the logic in the thread from
the launch of the same.
[ https://issues.apache.org/jira/browse/SOLR-922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Erick Erickson resolved SOLR-922.
---------------------------------
Resolution: Won't Fix
SPRING_CLEANING_2013 we can reopen if necessary.
> Solr WebApp wide Executor for better efficient management of threads , separating the logic in the thread from the launch of the same.
> ---------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-922
> URL: https://issues.apache.org/jira/browse/SOLR-922
> Project: Solr
> Issue Type: Improvement
> Components: clients - java
> Environment: Tomcat 6, JRE 6
> Reporter: Karthik K
> Priority: Minor
> Attachments: ExecServiceTest.java, SOLR-922.patch
>
>
> For a different jira - when we were discussing bringing in parallelism through threads and using Executors - encountered a case of using a webapp wide Executor for reusing thread pools for better use of thread resources , instead of thread.start() .
> pros: Custom Request Handlers and other plugins to the Solr App server can use this Executor API to retrieve the executor and just submit the Runnable / Callable impls to get the job done while getting the benefits of a thread pool . This might be necessary as we continue to write plugins to the core architecture and centralizing the threadpools might make it easy to control / prevent global Executor objects across the codebase / recreating them locally ( as they might be expensive ).
> $ find . -name *.java | xargs grep -nr 'start()' | grep "}"
> ./contrib/dataimporthandler/src/main/java/org/apache/solr/handler/dataimport/XPathEntityProcessor.java:377: }.start();
> ./contrib/dataimporthandler/src/main/java/org/apache/solr/handler/dataimport/DataImporter.java:368: }.start();
> ./src/java/org/apache/solr/handler/SnapPuller.java:382: }.start();
> ./src/java/org/apache/solr/handler/SnapShooter.java:52: }.start();
> ./src/java/org/apache/solr/handler/ReplicationHandler.java:134: }.start();
> ./src/common/org/apache/solr/common/util/ConcurrentLRUCache.java:112: }.start();
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