[jira] [Created] (SOLR-4934) Prevent runtime failure if users use initargs "useCompoundFile" setting on LogMergePolicy or TieredMergePolicy

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

Hoss Man created SOLR-4934:
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             Summary: Prevent runtime failure if users use initargs "useCompoundFile" setting on LogMergePolicy or TieredMergePolicy
                 Key: SOLR-4934
                 URL: https://issues.apache.org/jira/browse/SOLR-4934
             Project: Solr
          Issue Type: Bug
            Reporter: Hoss Man
            Assignee: Hoss Man
             Fix For: 5.0, 4.4


* LUCENE-5038 eliminated setUseCompoundFile(boolean) from the built in MergePolicies
* existing users may have configs that use <mergePolicy> init args to try and call that setter
* we already do some explicit checks for these MergePolices in SolrIndexConfig to deal with legacy syntax
* update the existing logic to remove "useCompoundFile" from the MergePolicy initArgs for these known policies if found, and log a warning.

(NOTE: i don't want to arbitrarily remove "useCompoundFile" from the initArgs regardless of class in case someone has a custom MergePolicy that implements that logic -- that would suck)

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