[SOLR-6201] Fail when multiple DirectoryFactory instances are specified.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Component/s: SolrCloud
• Assignee: Unassigned
• Reporter: jay vyas
• Created: 25/Jun/14 14:22
• Updated: 27/Jun/14 07:20
• Resolved: 27/Jun/14 07:20

Description

In SOLR 4.4 and possibly higher Its possible to have multiple directory factories defined. This can become very problematic because, in a large xml file, it is tricky to determine which file system is being used, in case someone appends an alternate file system at the end. The result : Core files are stored in a different location.

  <directoryFactory name="DirectoryFactory" class="org.apache.solr.core.HdfsDirectoryFactory">
    ....
   </directoryFactory>

  <directoryFactory name="DirectoryFactory2" class="my.company.CustomDirectoryFactory">
    ....
   </directoryFactory>

It would be better if the directoryFactory failed when multiple factories were defined, since clearly, this is a user error which will result in non-deterministic core behaviour (at best).

Issue Links

• duplicates: SOLR-5108 plugin loading should fail if mor then one instance of a singleton plugin is found
• duplicates: SOLR-4953 Config XML parsing should fail hard if an xpath is expect to match at most one node/string/int/boolean and multiple values are found