[ 
https://issues.apache.org/jira/browse/LUCENE-6886?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14995159#comment-14995159
 ] 

ASF subversion and git services commented on LUCENE-6886:
---------------------------------------------------------

Commit 1713103 from [~mikemccand] in branch 'dev/trunk'
[ https://svn.apache.org/r1713103 ]

LUCENE-6886: Directory.createTempOutput always uses .tmp extension, and codecs 
are not allowed to

> IndexWriter gets angry at leftover temp files (e.g. from BKD)
> -------------------------------------------------------------
>
>                 Key: LUCENE-6886
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6886
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: Trunk
>
>         Attachments: LUCENE-6886.patch, LUCENE-6886.patch, LUCENE-6886.patch
>
>
> I was trying to run performance test for the new dimensional values and hit 
> this crazy exception:
> {noformat}
> Exception in thread "main" java.lang.NumberFormatException: For input string: 
> "5976285795"
>   at 
> java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
>   at java.lang.Integer.parseInt(Integer.java:583)
>   at 
> org.apache.lucene.index.IndexFileDeleter.inflateGens(IndexFileDeleter.java:287)
>   at 
> org.apache.lucene.index.IndexFileDeleter.<init>(IndexFileDeleter.java:217)
>   at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:935)
>   at 
> perf.IndexAndSearchOpenStreetMaps.createIndex(IndexAndSearchOpenStreetMaps.java:64)
>   at 
> perf.IndexAndSearchOpenStreetMaps.main(IndexAndSearchOpenStreetMaps.java:162)
> {noformat}
> It happened because I killed my indexing process while BKD was writing temp 
> files.  On starting up again, IW would have removed these unreferenced files, 
> except inflateGens got confused by their names.
> This bug only happens on trunk.



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