[jira] [Created] (LUCENE-6233) CheckIndex is dog slow when checking term vectors

["Michael McCandless (JIRA)" <ji...@apache.org>]

Michael McCandless created LUCENE-6233:
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             Summary: CheckIndex is dog slow when checking term vectors
                 Key: LUCENE-6233
                 URL: https://issues.apache.org/jira/browse/LUCENE-6233
             Project: Lucene - Core
          Issue Type: Bug
            Reporter: Michael McCandless
            Assignee: Michael McCandless


I'm working on a test that creates a biggish index and I noticed the CheckIndex takes a surprisingly long time to check term vectors.

I profiled it and uncovered that we spend a lot of time (not sure this explains all of it) in Terms.getMin/getMax.  Since CompressingTermVectorsReader doesn't impl these methods efficiently (which is fine), we fallback to super's impl, which does a digit-by-digit binary search using seekCeil.

But for TVs this sometimes results in a linear scan.

I think CheckIndex should not check Terms.getMin/Max for TVs?



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