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From "Jason Rutherglen (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-1314) IndexReader.clone
Date Mon, 09 Feb 2009 18:34:59 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1314?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jason Rutherglen updated LUCENE-1314:
-------------------------------------

    Attachment: LUCENE-1314.patch

Mike, your patch solved the null pointer exception. An item of
concern is when deleteDocument is called on the sub-readers, the
write lock is not acquired, and it's not passed from the parent
MultiSegmentReader. In the new patch I close the subreaders
individually, then close the MultiSegmentReader. When opening the
index again the SegmentReader can't find the .del file. Perhaps we
javadoc the parameters of these types of cases or there's a fix.

{code}
java.io.FileNotFoundException: _b_1.del
	at org.apache.lucene.store.MockRAMDirectory.openInput(MockRAMDirectory.java:246)
	at org.apache.lucene.util.BitVector.<init>(BitVector.java:209)
	at org.apache.lucene.index.SegmentReader.loadDeletedDocs(SegmentReader.java:591)
	at org.apache.lucene.index.SegmentReader.initialize(SegmentReader.java:557)
	at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:495)
	at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:417)
	at org.apache.lucene.index.MultiSegmentReader.<init>(MultiSegmentReader.java:55)
	at org.apache.lucene.index.DirectoryIndexReader$1.doBody(DirectoryIndexReader.java:112)
	at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:688)
	at org.apache.lucene.index.DirectoryIndexReader.open(DirectoryIndexReader.java:123)
	at org.apache.lucene.index.IndexReader.open(IndexReader.java:316)
	at org.apache.lucene.index.IndexReader.open(IndexReader.java:227)
	at org.apache.lucene.index.TestIndexReaderClone.testCloneSubreaders(TestIndexReaderClone.java:427)
{code}

> IndexReader.clone
> -----------------
>
>                 Key: LUCENE-1314
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1314
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Index
>    Affects Versions: 2.3.1
>            Reporter: Jason Rutherglen
>            Assignee: Michael McCandless
>            Priority: Minor
>             Fix For: 2.9
>
>         Attachments: LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch,
LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch,
LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch,
LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch,
LUCENE-1314.patch, LUCENE-1314.patch, LUCENE-1314.patch, lucene-1314.patch, lucene-1314.patch,
lucene-1314.patch, lucene-1314.patch, lucene-1314.patch, lucene-1314.patch, lucene-1314.patch,
lucene-1314.patch, lucene-1314.patch, lucene-1314.patch, lucene-1314.patch, lucene-1314.patch
>
>
> Based on discussion http://www.nabble.com/IndexReader.reopen-issue-td18070256.html. 
The problem is reopen returns the same reader if there are no changes, so if docs are deleted
from the new reader, they are also reflected in the previous reader which is not always desired
behavior.

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