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https://issues.apache.org/jira/browse/LUCENE-7999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16217300#comment-16217300
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ASF subversion and git services commented on LUCENE-7999:
---------------------------------------------------------
Commit 4c5ce2d646ba6c44aab19dab725fb74a98df4134 in lucene-solr's branch
refs/heads/branch_7x from Mike McCandless
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=4c5ce2d ]
LUCENE-7999: upgrade int to long for tracking the counter for the next segment
name to prevent overflow
> Invalid segment file name
> -------------------------
>
> Key: LUCENE-7999
> URL: https://issues.apache.org/jira/browse/LUCENE-7999
> Project: Lucene - Core
> Issue Type: Bug
> Affects Versions: 5.x, 6.x, 7.0
> Reporter: Mykhailo Demianenko
> Priority: Minor
> Fix For: master (8.0), 7.2
>
> Attachments: LUCENE-7999.patch, segmentName.patch
>
>
> 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(SegmentInfo.java:280)
> at org.apache.lucene.index.SegmentInfo.addFiles(SegmentInfo.java:262)
> at org.apache.lucene.index.SegmentInfo.setFiles(SegmentInfo.java:256)
> at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4080)
> at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3655)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:588)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:626)
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