[jira] [Created] (SOLR-9398) deleteByQuery blocks during an optimize

["Shawn Heisey (JIRA)" <ji...@apache.org>]

Shawn Heisey created SOLR-9398:
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             Summary: deleteByQuery blocks during an optimize
                 Key: SOLR-9398
                 URL: https://issues.apache.org/jira/browse/SOLR-9398
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
    Affects Versions: 5.3.2
            Reporter: Shawn Heisey


When merging is happening, particularly if it's an optimize, a deleteByQuery update request will block until the merge is complete.  Any other change to the index is also blocked by the delete.

If a query with fl set to the uniqueKey is made, then the list of IDs received from that query is submitted as a delete by ID, then there's no problem.  This suggests that it is probably possible to fix this.

I know for sure that this affects 5.3.2, and I think it likely affects all 6.x versions too.  I don't have any large indexes on anything newer than 5.3.2.



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