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https://issues.apache.org/jira/browse/JCR-1238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12545844
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Marcel Reutegger commented on JCR-1238:
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..., which is also the default in lucene.
> Change default value for maxMergeDocs
> -------------------------------------
>
> Key: JCR-1238
> URL: https://issues.apache.org/jira/browse/JCR-1238
> Project: Jackrabbit
> Issue Type: Improvement
> Components: jackrabbit-core
> Reporter: Marcel Reutegger
> Priority: Minor
>
> This is actually a left over from the time before JCR-197 was implemented.
> Back then index merges were performed with the client thread and would hold
> up execution for a long time if a large number of nodes were merged. The
> default value for maxMergeDocs limited this to 100'000 nodes, resulting in a
> couple of seconds for the merge operation.
> This default value does not make sense anymore because index merges are
> performed in a background thread and may take a long time without an effect
> on regular workspace operations. If a workspace grows large it may cause
> performance degradation because the number of index segments increases
> linearly when there are more than 100'000 nodes.
> I propose to set the new default to Integer.MAX_VALUE
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