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From "Michael Neale (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-778) Error on query initialization - intermittent
Date Mon, 23 Apr 2007 00:39:15 GMT

    [ https://issues.apache.org/jira/browse/JCR-778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12490762
] 

Michael Neale commented on JCR-778:
-----------------------------------

ok the problem isn't just with locking Per-se - thats only part. 

Even when locking is disabled, the index reader tries to access stuff that just isn't there:


java.io.FileNotFoundException: /home/michael/projects/jboss-rules/drools-repository/repository/repository/index/_42/segments
(No such file or directory)
	at java.io.RandomAccessFile.open(Native Method)
	at java.io.RandomAccessFile.<init>(RandomAccessFile.java:212)
	at org.apache.lucene.store.FSIndexInput$Descriptor.<init>(FSDirectory.java:430)
	at org.apache.lucene.store.FSIndexInput.<init>(FSDirectory.java:439)
	at org.apache.lucene.store.FSDirectory.openInput(FSDirectory.java:329)
	at org.apache.jackrabbit.core.query.lucene.FSDirectory.openInput(FSDirectory.java:209)
	at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:45)
	at org.apache.lucene.index.IndexReader$1.doBody(IndexReader.java:146)
	at org.apache.lucene.store.Lock$With.run(Lock.java:99)
	at org.apache.lucene.index.IndexReader.open(IndexReader.java:141)
	at org.apache.lucene.index.IndexReader.open(IndexReader.java:136)
	at org.apache.jackrabbit.core.query.lucene.AbstractIndex.getReadOnlyIndexReader(AbstractIndex.java:191)
	at org.apache.jackrabbit.core.query.lucene.MultiIndex.getIndexReader(MultiIndex.java:616)
	at org.apache.jackrabbit.core.query.lucene.SearchIndex.executeQuery(SearchIndex.java:384)
	at org.apache.jackrabbit.core.query.lucene.LazyQueryResultImpl.executeQuery(LazyQueryResultImpl.java:204)
	at org.apache.jackrabbit.core.query.lucene.LazyQueryResultImpl.getResults(LazyQueryResultImpl.java:244)
	at org.apache.jackrabbit.core.query.lucene.LazyQueryResultImpl.<init>(LazyQueryResultImpl.java:161)
	at org.apache.jackrabbit.core.query.lucene.QueryImpl.execute(QueryImpl.java:164)
	at org.apache.jackrabbit.core.query.QueryImpl.execute(QueryImpl.java:142)
	at org.drools.repository.RulesRepository.findAssetsByName(RulesRepository.java:968)
	at org.drools.repository.RulesRepository.findAssetsByName(RulesRepository.java:980)
	at org.drools.repository.RulesRepositoryTest.testFindRulesByName(RulesRepositoryTest.java:87)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at junit.framework.TestCase.runTest(TestCase.java:154)
	at junit.framework.TestCase.runBare(TestCase.java:127)
	at junit.framework.TestResult$1.protect(TestResult.java:106)
	at junit.framework.TestResult.runProtected(TestResult.java:124)
	at junit.framework.TestResult.run(TestResult.java:109)
	at junit.framework.TestCase.run(TestCase.java:118)
	at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:128)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

> Error on query initialization - intermittent
> --------------------------------------------
>
>                 Key: JCR-778
>                 URL: https://issues.apache.org/jira/browse/JCR-778
>             Project: Jackrabbit
>          Issue Type: Bug
>          Components: indexing
>    Affects Versions: 1.1, 1.2.2
>         Environment: Linux Fedora Core 5, ext2 filesystem, Java 1.5 (Sun)
>            Reporter: Michael Neale
>
> About 1 in ten times, I get the error as shown in the stack trace below. This happens
when I run test, or when I start the app. The only way to resolve (when testing) seems to
be to blow away the repository. 
> It always happens at the point the query manager is accessed (triggering the query subsystem
to start up). It DOES NOT cause an exception to be thrown back to the caller, I just noticed
it in the logs. Basically the queries return NO data at all (and show up as test failures
of course). 
> In each case when I startup the system/test, if the repository exists I use it, and (for
tests) clean it by deleting the root node of the user content, and then starting again, otherwise
there is nothing that exciting.
> Please let me know if more info is needed.
> ERROR 05-03 15:54:39,386 (LazyQueryResultImpl.java:getResults:266)  -Exception while
executing query:
> java.io.IOException : No such file or directory
>     at java.io.UnixFileSystem.createFileExclusively(Native Method)
>     at java.io.File.createNewFile(File.java:850)
>     at org.apache.jackrabbit.core.query.lucene.FSDirectory$1.obtain( FSDirectory.java:119)
>     at org.apache.lucene.store.Lock.obtain(Lock.java:51)
>     at org.apache.lucene.store.Lock$With.run(Lock.java:98)
>     at org.apache.lucene.index.IndexReader.open(IndexReader.java:141)
>     at org.apache.lucene.index.IndexReader.open(IndexReader.java:136)
>     at org.apache.jackrabbit.core.query.lucene.AbstractIndex.getReadOnlyIndexReader(AbstractIndex.java:191)
>     at org.apache.jackrabbit.core.query.lucene.MultiIndex.getIndexReader (MultiIndex.java:616)
>     at org.apache.jackrabbit.core.query.lucene.SearchIndex.executeQuery(SearchIndex.java:384)
>     at org.apache.jackrabbit.core.query.lucene.LazyQueryResultImpl.executeQuery(LazyQueryResultImpl.java
:204)
>     at org.apache.jackrabbit.core.query.lucene.LazyQueryResultImpl.getResults(LazyQueryResultImpl.java:244)
>     at org.apache.jackrabbit.core.query.lucene.LazyQueryResultImpl.<init>(LazyQueryResultImpl.java
:161)
>     at org.apache.jackrabbit.core.query.lucene.QueryImpl.execute(QueryImpl.java:164)
>     at org.apache.jackrabbit.core.query.QueryImpl.execute(QueryImpl.java:142)

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