[jira] [Closed] (LUCENE-7980) Improve ERROR msg on setting maxThreadCount & maxMergeCount for ConcurrentMergeScheduler

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

     [ https://issues.apache.org/jira/browse/LUCENE-7980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Amrit Sarkar closed LUCENE-7980.
--------------------------------
    Resolution: Won't Fix

> Improve ERROR msg on setting maxThreadCount & maxMergeCount for ConcurrentMergeScheduler
> ----------------------------------------------------------------------------------------
>
>                 Key: LUCENE-7980
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7980
>             Project: Lucene - Core
>          Issue Type: Improvement
>    Affects Versions: 7.1
>            Reporter: Amrit Sarkar
>         Attachments: LUCENE-7980.patch
>
>
> SOLR-11257
> [~thelabdude],
> I tried tuning the maxThreadCount for my Concurrent scheduler using:
> {code}
>  <mergeScheduler class="org.apache.lucene.index.ConcurrentMergeScheduler">
>           <int name="maxThreadCount">4</int>
>        </mergeScheduler>
> {code}
> and got:
> Validation errors:
> {{Error: java.lang.IllegalArgumentException:java.lang.IllegalArgumentException: both maxMergeCount and maxThreadCount must be AUTO_DETECT_MERGES_AND_THREADS}}
> Hmmm ... don't know what that means? As I user I need a better error message than that ^ Of course looking at the code, it seems I must also set: maxMergeCount but that error doesn't tell me that. So this bug is about fixing up the error to be more helpful to the user. Of course this is advanced functionality, so maybe expecting me to read the code to understand, in which case, just close this as invalid.



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