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https://issues.apache.org/jira/browse/LUCENE-1516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12679355#action_12679355
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jasonrutherglen edited comment on LUCENE-1516 at 3/5/09 1:11 PM:
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Here's a summary of the which tests are failing grouped by the
guessed cause:
* TestDeletionPolicy, TestIndexFileDeleter, TestIndexReader fails (not
all methods but they seem to be related, i.e. files are being left
open that should not be)
* In TestIndexWriter most test methods pass, however a few such as
testCommitOnCloseDiskUsage fail.
TestIndexWriterDelete.testUpdatesOnDiskFull fails for reasons
presumably similar to TestIndexWriter.testCommitOnCloseDiskUsage
* TestTransactions and TestStressIndexing2 fails. At first glance I'm
not sure why
was (Author: jasonrutherglen):
Here's a summary of the which tests are failing with a grouped by the
guessed cause:
* TestDeletionPolicy, TestIndexFileDeleter, TestIndexReader fails (not
all methods but they seem to be related, i.e. files are being left
open that should not be)
* In TestIndexWriter most test methods pass, however a few such as
testCommitOnCloseDiskUsage fail.
TestIndexWriterDelete.testUpdatesOnDiskFull fails for reasons
presumably similar to TestIndexWriter.testCommitOnCloseDiskUsage
* TestTransactions and TestStressIndexing2 fails. At first glance I'm
not sure why
> Integrate IndexReader with IndexWriter
> ---------------------------------------
>
> Key: LUCENE-1516
> URL: https://issues.apache.org/jira/browse/LUCENE-1516
> Project: Lucene - Java
> Issue Type: Improvement
> Affects Versions: 2.4
> Reporter: Jason Rutherglen
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 2.9
>
> Attachments: LUCENE-1516.patch, LUCENE-1516.patch, LUCENE-1516.patch,
> LUCENE-1516.patch, LUCENE-1516.patch, LUCENE-1516.patch, LUCENE-1516.patch,
> LUCENE-1516.patch, LUCENE-1516.patch, LUCENE-1516.patch, LUCENE-1516.patch,
> LUCENE-1516.patch, LUCENE-1516.patch, LUCENE-1516.patch, LUCENE-1516.patch,
> LUCENE-1516.patch, LUCENE-1516.patch, LUCENE-1516.patch, LUCENE-1516.patch,
> LUCENE-1516.patch
>
> Original Estimate: 672h
> Remaining Estimate: 672h
>
> The current problem is an IndexReader and IndexWriter cannot be open
> at the same time and perform updates as they both require a write
> lock to the index. While methods such as IW.deleteDocuments enables
> deleting from IW, methods such as IR.deleteDocument(int doc) and
> norms updating are not available from IW. This limits the
> capabilities of performing updates to the index dynamically or in
> realtime without closing the IW and opening an IR, deleting or
> updating norms, flushing, then opening the IW again, a process which
> can be detrimental to realtime updates.
> This patch will expose an IndexWriter.getReader method that returns
> the currently flushed state of the index as a class that implements
> IndexReader. The new IR implementation will differ from existing IR
> implementations such as MultiSegmentReader in that flushing will
> synchronize updates with IW in part by sharing the write lock. All
> methods of IR will be usable including reopen and clone.
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