Tim Smith created LUCENE-5492:
---------------------------------
Summary: IndexFileDeleter AssertionError in presence of
*_upgraded.si files
Key: LUCENE-5492
URL: https://issues.apache.org/jira/browse/LUCENE-5492
Project: Lucene - Core
Issue Type: Bug
Affects Versions: 4.7
Reporter: Tim Smith
When calling IndexWriter.deleteUnusedFiles against an index that contains 3.x
segments, i am seeing the following exception:
{code}
java.lang.AssertionError: failAndDumpStackJunitStatment: RefCount is 0
pre-decrement for file "_0_upgraded.si"
at
org.apache.lucene.index.IndexFileDeleter$RefCount.DecRef(IndexFileDeleter.java:630)
at
org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:514)
at
org.apache.lucene.index.IndexFileDeleter.deleteCommits(IndexFileDeleter.java:286)
at
org.apache.lucene.index.IndexFileDeleter.revisitPolicy(IndexFileDeleter.java:393)
at
org.apache.lucene.index.IndexWriter.deleteUnusedFiles(IndexWriter.java:4617)
{code}
I believe this is caused by IndexFileDeleter not being aware of the Lucene3x
Segment Infos Format (notably the _upgraded.si files created to "upgrade" an
old index)
This is new in 4.7 and did not occur in 4.6.1
Still trying to track down a workaround/fix
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