Hi Michael
Sorry for the late reply. As you guessed, it missed my attention.
Michael McCandless wrote:
Hi,
Can you describe what led up to this?
My application indexes emails. In this particular instance, I had
reindexed all emails from their original sources. The error occurred
while I was using a search to search through the index.
Were there any exceptions when adding documents to the index?
I had a look through all my application debug logs and there were no
exceptions outputted.
Was the index newly created with 2.3.1 or created on 2.3.0 or 2.2?
This index was created by v2.3.1
What options are you using in your IndexWriter?
See source code below:
public void indexMessage(Email email) throws MessageSearchException {
Volume volume = email.getEmailId().getVolume();
VolumeIndex volumeIndex = volumeIndexes.get(volume);
if (volumeIndex!=null) {
volumeIndex.indexMessage(email);
} else {
volumeIndex = new VolumeIndex(volume);
volumeIndex.indexMessage(email);
volumeIndexes.put(volume,volumeIndex);
}
}
public class VolumeIndex {
IndexWriter writer;
Volume volume;
Timer closeIndexTimer = new Timer();
AccessStatus volumeOpened = AccessStatus.CLOSED;
Object indexLock = new Object();
public synchronized AccessStatus getAccessStatus() {
return volumeOpened;}
public synchronized void setAccessStatus(AccessStatus
volumeOpened) {
this.volumeOpened = volumeOpened;
}
public VolumeIndex(Volume volume) {
this.volume = volume;
closeIndexTimer.scheduleAtFixedRate(new TimerTask() {
public void run() {
closeIndex(writer);
}
}, indexOpenTime, indexOpenTime);
}
protected void openIndex() throws MessageSearchException {
synchronized(indexLock) {
if (getAccessStatus()==AccessStatus.CLOSED) {
logger.debug("openIndex() index will be
opened. it is currently closed.");
openIndex(false);
setAccessStatus(AccessStatus.OPEN);
} else
logger.debug("openIndex() did not bother
opening index. it is already open.");
}
}
protected void openIndex(boolean retry) throws
MessageSearchException {
if (volume == null)
throw new MessageSearchException("assertion
failure: null volume",logger);
logger.debug("opening index for write {"+volume+"}");
prepareIndex(volume);
Index activeIndex = volume.getActiveIndex();
logger.debug("opening search index for write
{indexpath='"+activeIndex.getPath()+"'}");
try {
writer = new
IndexWriter(activeIndex.getPath(), analyzer);
} catch (IOException io)
{
if (!retry) {
// most obvious reason for error is that
there is a lock on the index, due hard shutdown
// resolution delete the lock, and try again
logger.warn("failed to open search index for
write. possible write lock due to hard system shutdown.",io);
logger.info("attempting recovery. deleting
index lock file and retrying..");
File lockFile = new
File(activeIndex.getPath()+File.separatorChar + "write.lock");
lockFile.delete();
try {
openIndex(true);
} catch (MessageSearchException mse) {
throw mse;
}
}
throw new MessageSearchException("failed to
open/ index writer {location='"+activeIndex.getPath()+"'}",io,logger);
}
}
public void prepareIndex(Volume volume) throws
MessageSearchException {
if (volume==null)
throw new MessageSearchException("assertion
failure: null volume",logger);
if (volume.getIndexPath().startsWith("rmi://"))
return;
File indexDir = new File(volume.getIndexPath());
if (!indexDir.exists()) {
logger.info("index directory does not exist. will
proceed with creation {location='" + volume.getIndexPath() + "'}");
boolean success = indexDir.mkdir();
if (!success)
throw new MessageSearchException("failed to
create index directory {location='" + volume.getIndexPath() + "'}",logger);
logger.info("index directory successfully created
{location='" + volume.getIndexPath() + "'}");
}
}
public void indexMessage(Email message) throws
MessageSearchException {
long s = (new Date()).getTime();
if (message == null)
throw new MessageSearchException("assertion failure:
null message",logger);
logger.debug("indexing message {"+message+"}");
Document doc = new Document();
try {
writeMessageToDocument(message,doc);
String language = doc.get("lang");
if (language==null)
language = getIndexLanguage();
synchronized (indexLock) {
openIndex();
writer.addDocument(doc,AnalyzerFactory.getAnalyzer(language,AnalyzerFactory.Operation.INDEX));
}
logger.debug("message indexed successfully
{"+message+",language='"+language+"'}");
} catch (MessagingException me)
{
throw new MessageSearchException("failed to decode
message during indexing",me,logger);
} catch (IOException me) {
throw new MessageSearchException("failed to index
message {"+message+"}",me,logger);
} catch (ExtractionException ee)
{
throw new MessageSearchException("failed to decode
attachments in message {"+message+"}",ee,logger);
} catch (Exception e) {
throw new MessageSearchException("failed to index
message",e,logger);
}
logger.debug("indexing message end {"+message+"}");
long e = (new Date()).getTime();
logger.debug("indexing time {time='"+(e-s)+"'}");
}
protected void closeIndex(IndexWriter writer) {
synchronized(indexLock) {
if (getAccessStatus()==AccessStatus.CLOSED)
return;
try {
if (writer!=null)
writer.close();
try { Thread.sleep(50); } catch
(Exception e) {}
} catch (Exception io) {}
setAccessStatus(AccessStatus.CLOSED);
}
}
protected void finalize() throws Throwable {
logger.debug("volumeindex class is shutting down");
try {
closeIndexTimer.cancel();
} finally {
super.finalize();
}
}
}
Is it easy to reproduce?
Its difficult to reproduce since the problem seems intermittant..
If so, can you call setInfoStream on your IndexWriter when creating
this index and post the resulting output?
I'll try this but I cannot guarantee anything. Do you see anything
obvious from the above?
Mike
Jamie wrote:
Hi There
I am getting the following error while searching a given index:
java.io.FileNotFoundException: /usr/local/index/_0.fdt (No such file
or directory)
at java.io.RandomAccessFile.open(Native Method)
at java.io.RandomAccessFile.<init>(Unknown Source)
at
org.apache.lucene.store.FSDirectory$FSIndexInput$Descriptor.<init>(FSDirectory.java:506)
at
org.apache.lucene.store.FSDirectory$FSIndexInput.<init>(FSDirectory.java:536)
at
org.apache.lucene.store.FSDirectory.openInput(FSDirectory.java:445)
at
org.apache.lucene.index.FieldsReader.<init>(FieldsReader.java:75)
at
org.apache.lucene.index.SegmentReader.initialize(SegmentReader.java:308)
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:173)
at
org.apache.lucene.search.IndexSearcher.<init>(IndexSearcher.java:48)
My software used to work perfectly under earlier versions of Lucene.
Since I upgraded to 2.3.1, this problem has arisen.
I seriously worried my customer's indexes will be corrupted. Lucene
expects to find a file that does not exist.
Any ideas on what might be happening and how to rectify this?
Jamie
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