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From "Mykhailo Demianenko (JIRA)" <>
Subject [jira] [Created] (LUCENE-7999) Invalid segment file name
Date Thu, 19 Oct 2017 10:15:00 GMT
Mykhailo Demianenko created LUCENE-7999:

             Summary: Invalid segment file name
                 Key: LUCENE-7999
             Project: Lucene - Core
          Issue Type: Bug
    Affects Versions: 7.0, 5.x, 6.x
            Reporter: Mykhailo Demianenko
            Priority: Minor

After really long and intensive index usage its possible to overflow counter that used to
generate new segment name that will not satisfy validation criteria:

Caused by: java.lang.IllegalArgumentException: invalid codec filename '_-zik0zk_Lucene54_0.dvm',
must match: _[a-z0-9]+(_.*)?\..*
    at org.apache.lucene.index.SegmentInfo.checkFileNames(
    at org.apache.lucene.index.SegmentInfo.addFiles(
    at org.apache.lucene.index.SegmentInfo.setFiles(
    at org.apache.lucene.index.IndexWriter.mergeMiddle(
    at org.apache.lucene.index.IndexWriter.merge(
    at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(
    at org.apache.lucene.index.ConcurrentMergeScheduler$

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