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https://issues.apache.org/jira/browse/SOLR-11257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amrit Sarkar updated SOLR-11257:
--------------------------------
Attachment: SOLR-11257.patch
[~thelabdude],
I faced the similar confusion configuring either of the maxThreadCount and
maxMergeCount. AUTO_DETECT_MERGES_AND_THREADS is resolved to {{-1}}, so better
providing that information than the constant variable name.
Also, {{ConcurrentMergeScheduler}} is part of Lucene, shouldn't we discuss this
issue in LUCENE project. Nevertheless, I attached a patch, just changed the
error message as you mentioned:
{{Both maxMergeCount and maxThreadCount should be passed (unless default '-1')
or None}}
> Only setting maxThreadCount for ConcurrentMergeScheduler (which is a user
> error) leads to a confusing validation error msg.
> ---------------------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-11257
> URL: https://issues.apache.org/jira/browse/SOLR-11257
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Timothy Potter
> Priority: Minor
> Attachments: SOLR-11257.patch
>
>
> 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:
> {code}
> Validation errors:
> Error: java.lang.IllegalArgumentException:java.lang.IllegalArgumentException:
> both maxMergeCount and maxThreadCount must be AUTO_DETECT_MERGES_AND_THREADS
> {code}
> 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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