[jira] Updated: (SOLR-935) DataImportHandler: Add logging to record failure to acquire lock by DataImporter for a given request

["Kay Kay (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-935?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kay Kay updated SOLR-935:
-------------------------

    Priority: Major  (was: Minor)

Increasing priority since in a workflow scenario with more than 2 delta-import requests received at the server - we need some way to track in the debug log that one of them actually failed and need to be tried again. 

> DataImportHandler: Add logging to record failure to acquire lock by DataImporter for a given request 
> -----------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-935
>                 URL: https://issues.apache.org/jira/browse/SOLR-935
>             Project: Solr
>          Issue Type: Improvement
>          Components: contrib - DataImportHandler
>         Environment: Java 6, Tomcat 6.0.18
>            Reporter: Kay Kay
>             Fix For: 1.4
>
>         Attachments: SOLR-935.patch
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> There is a possibility of 2 threads to be in DataImporter:runCmd, until before  importLock.tryLock() method and then depending on the scheduling - one of them is allowed to pass through from then .
> We need to log the failure of the other as to unable to start because of the failure to acquire the mutex, to distinguish between successful start of import and failure to do so. 

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