[jira] [Created] (LUCENE-5121) 4.4 RC0 can not read indexes created with 4.2.1 using Disk based docvals

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

Hoss Man created LUCENE-5121:
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             Summary: 4.4 RC0 can not read indexes created with 4.2.1 using Disk based docvals
                 Key: LUCENE-5121
                 URL: https://issues.apache.org/jira/browse/LUCENE-5121
             Project: Lucene - Core
          Issue Type: Bug
            Reporter: Hoss Man
            Priority: Blocker
             Fix For: 4.4


On the #solr irc channel, user adityab reported a problem trying to upgrade an existing solr instance from 4.2.1 to the 4.4 RC0 code.  The specific error he reported was a "CorruptIndexException: invalid type: 65" from DiskDocValuesProducer.readFields using an MMapIndexInput.  While waiting for more details from adityab on reproducible configs, i attempted to do a trivial test using simple solr configs based on the docvals test configs, and was able to trigger a slightly different error in which DiskDocValuesProducer.readFields caused an EOFException.

The problem reproduces on both solr init, and when using CheckIndex -- details to reproduce to follow in an attachment/comment

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