Amrit Sarkar created LUCENE-7980:
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Summary: 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
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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