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https://issues.apache.org/jira/browse/LUCENE-5931?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vitaly Funstein updated LUCENE-5931:
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Attachment: CommitReuseTest.java
> DirectoryReader.openIfChanged(oldReader, commit) incorrectly assumes given
> commit points has deletes/field updates
> ------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-5931
> URL: https://issues.apache.org/jira/browse/LUCENE-5931
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/index
> Affects Versions: 4.6.1
> Reporter: Vitaly Funstein
> Priority: Critical
> Attachments: CommitReuseTest.java
>
>
> {{StandardDirectoryReader}} assumes that the segments from commit point have
> deletes, when they may not, yet the original SegmentReader for the segment
> that we are trying to reuse does. This is evident when running attached JUnit
> test case with asserts enabled (default):
> {noformat}
> java.lang.AssertionError
> at
> org.apache.lucene.index.StandardDirectoryReader.open(StandardDirectoryReader.java:188)
> at
> org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:326)
> at
> org.apache.lucene.index.StandardDirectoryReader$2.doBody(StandardDirectoryReader.java:320)
> at
> org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:702)
> at
> org.apache.lucene.index.StandardDirectoryReader.doOpenFromCommit(StandardDirectoryReader.java:315)
> at
> org.apache.lucene.index.StandardDirectoryReader.doOpenNoWriter(StandardDirectoryReader.java:311)
> at
> org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:262)
> at
> org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:183)
> {noformat}
> or, if asserts are disabled then it falls through into NPE:
> {noformat}
> java.lang.NullPointerException
> at java.io.File.<init>(File.java:305)
> at
> org.apache.lucene.store.NIOFSDirectory.openInput(NIOFSDirectory.java:80)
> at
> org.apache.lucene.codecs.lucene40.BitVector.<init>(BitVector.java:327)
> at
> org.apache.lucene.codecs.lucene40.Lucene40LiveDocsFormat.readLiveDocs(Lucene40LiveDocsFormat.java:90)
> at org.apache.lucene.index.SegmentReader.<init>(SegmentReader.java:131)
> at
> org.apache.lucene.index.StandardDirectoryReader.open(StandardDirectoryReader.java:194)
> at
> org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:326)
> at
> org.apache.lucene.index.StandardDirectoryReader$2.doBody(StandardDirectoryReader.java:320)
> at
> org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:702)
> at
> org.apache.lucene.index.StandardDirectoryReader.doOpenFromCommit(StandardDirectoryReader.java:315)
> at
> org.apache.lucene.index.StandardDirectoryReader.doOpenNoWriter(StandardDirectoryReader.java:311)
> at
> org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:262)
> at
> org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:183)
> {noformat}
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