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Thread: Optimize does not work on RAMDirectory

This question is not answered. Helpful answers available: 2. Correct answers available: 1.


Permlink Replies: 11 - Pages: 1 - Last Post: Dec 3, 2011 4:02 AM Last Post By: woolrich
Nina Schumer

Posts: 30
Registered: 11/6/08
Optimize does not work on RAMDirectory
Posted: Feb 2, 2009 7:09 AM
 
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Attachment compasstest.zip (11.0 KB)
Neither

compassDAO's getCompass().getSearchEngineOptimizer().optimize();

nor a scheduled optimizer does optimize an index in RAMDirectory.

The attached testcase ramdirectory.RamDirectoryTest has two methods:

public void testOptimizeWithFileDirectory()
--> runs perfectly, assertTrue(compassDAO.isOptimized()) is true

public void testOptimizeWithRAMDirectory()
--> fails, because assertTrue(compassDAO.isOptimized()) is false

I use AggressiveOptimizer so that the marked as deleted lucene docs are deleted as well.

Regards,
Nina
Shay Banon

Posts: 4,028
Registered: 9/6/05
Re: Optimize does not work on RAMDirectory
Posted: Feb 2, 2009 1:19 PM   in response to: Nina Schumer in response to: Nina Schumer
 
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Which version of Compass are you using?
Nina Schumer

Posts: 30
Registered: 11/6/08
Re: Optimize does not work on RAMDirectory
Posted: Feb 3, 2009 3:00 AM   in response to: Shay Banon in response to: Shay Banon
 
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I use

compass 2.0.1

and

lucene 2.3.1.

By the way: I copied the index generated in RAMDirectory to JDBCDirectory. For reading the index I copy the JDBCDirectory to another RAMDirectory.

Unfortunatly I can not read that index because of the following exception:

java.io.FileNotFoundException: _z.frq
at org.apache.lucene.store.RAMDirectory.openInput(RAMDirectory.java:234)
at org.apache.lucene.store.Directory.openInput(Directory.java:99)
at org.apache.lucene.index.SegmentReader.initialize(SegmentReader.java:323)
at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:262)
at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:197)
at org.apache.lucene.index.MultiSegmentReader.<init>(MultiSegmentReader.java:55)
at org.apache.lucene.index.DirectoryIndexReader$1.doBody(DirectoryIndexReader.java:75)
at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:636)
at org.apache.lucene.index.DirectoryIndexReader.open(DirectoryIndexReader.java:63)
at org.apache.lucene.index.IndexReader.open(IndexReader.java:209)
at org.apache.lucene.index.IndexReader.open(IndexReader.java:192)
at org.compass.core.lucene.engine.manager.LuceneIndexHolder.<init>(LuceneIndexHolder.java:43)
at org.compass.core.lucene.engine.manager.DefaultLuceneSearchEngineIndexManager.internalRefreshCache(DefaultLuceneSearchEngineIndexManager.java:380)
at org.compass.core.lucene.engine.manager.DefaultLuceneSearchEngineIndexManager.openIndexHolderBySubIndex(DefaultLuceneSearchEngineIndexManager.java:405)
at org.compass.core.lucene.engine.transaction.AbstractTransaction.doInternalSearch(AbstractTransaction.java:148)
at org.compass.core.lucene.engine.transaction.readcommitted.ReadCommittedTransaction.doInternalSearch(ReadCommittedTransaction.java:159)
at org.compass.core.lucene.engine.transaction.AbstractTransaction.internalSearch(AbstractTransaction.java:112)
at org.compass.core.lucene.engine.LuceneSearchEngine.internalSearch(LuceneSearchEngine.java:366)
at org.compass.core.lucene.util.LuceneHelper.getLuceneInternalSearch(LuceneHelper.java:165)
at de.myToys.konsum.core.dao.compass.BasicCompassDAO2$3.doInCompass(BasicCompassDAO2.java:244)
at de.myToys.konsum.core.dao.compass.BasicCompassDAO2$3.doInCompass(BasicCompassDAO2.java:230)
at org.compass.core.CompassTemplate.execute(CompassTemplate.java:130)
at org.compass.core.CompassTemplate.execute(CompassTemplate.java:112)

Regards,
Nina

Nina Schumer

Posts: 30
Registered: 11/6/08
(Aggressive) optimizing still does not work with RAMDirectory
Posted: Feb 9, 2009 11:11 AM   in response to: Nina Schumer in response to: Nina Schumer
 
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I found out why the index was corrupt:

During copying die index from RAMDirectory to JDBCDirectory a scheduled optimizer was running
on the JDBCDirectory! In other words: while "files" were copyed to the JDBCDirectory the already copied
files were modified and inconsistent data was created.

Without that optimizing the index is readable now. That exception does not occur anymore.

Nevertheless (aggressive) optimizing on RAMDirecotry still does not have the desired effect as you see in the testcase.

Would be great if this could be solved.

Regards,
Nina

Shay Banon

Posts: 4,028
Registered: 9/6/05
Re: (Aggressive) optimizing still does not work with RAMDirectory
Posted: Feb 11, 2009 11:39 PM   in response to: Nina Schumer in response to: Nina Schumer
 
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Hi Nina,

Sorry, I won't be able to run your test this week, I am busy more than usual :). I will try and run it next week.

Cheers,
Shay
linzhixiong123

Posts: 128
Registered: 9/30/11
Re: Optimize does not work on RAMDirectory
Posted: Sep 30, 2011 3:31 AM   in response to: Nina Schumer in response to: Nina Schumer
 
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linzhixiong159159

Posts: 90
Registered: 10/4/11
Re: Optimize does not work on RAMDirectory
Posted: Oct 4, 2011 10:44 PM   in response to: Nina Schumer in response to: Nina Schumer
 
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Posts: 523
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Posts: 180
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Posted: Dec 3, 2011 1:30 AM   in response to: Nina Schumer in response to: Nina Schumer
 
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woolrich

Posts: 142
Registered: 12/3/11
Re: Optimize does not work on RAMDirectory
Posted: Dec 3, 2011 4:02 AM   in response to: Nina Schumer in response to: Nina Schumer
 
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