I will try that now.
Thank you.
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: "Lucene Users List" <[EMAIL PROTECTED]>
Sent: Thursday, November 11, 2004 6:56 PM
Subject: Re: Lucene : avoiding locking
> I'm working on a similar project...
> Make sure that only one call to the index method is occuring at
> a time. Synchronizing that method should do it.
>
> --- Luke Shannon <[EMAIL PROTECTED]> wrote:
>
> > Hi All;
> >
> > I have hit a snag in my Lucene integration and don't know what
> > to do.
> >
> > My company has a content management product. Each time
> > someone changes the
> > directory structure or a file with in it that portion of the
> > site needs to
> > be re-indexed so the changes are reflected in future searches
> > (indexing
> > must
> > happen during run time).
> >
> > I have written a Indexer class with a static Index() method.
> > The idea is
> > too
> > call the method every time something changes and the index
> > needs to be
> > re-examined. I am hoping the logic put in by Doug Cutting
> > surrounding the
> > UID will make indexing efficient enough to be called so
> > frequently.
> >
> > This class works great when I tested it on my own little site
> > (I have about
> > 2000 file). But when I drop the functionality into the QA
> > environment I get
> > a locking error.
> >
> > I can't access the stack trace, all I can get at is a log
> > file the
> > application writes too. Here is the section my class wrote.
> > It was right in
> > the middle of indexing and bang lock issue.
> >
> > I don't know if the problem is in my code or something in the
> > existing
> > application.
> >
> > Error Message:
> > ENTER|SearchEventProcessor.visit(ContentNodeDeleteEvent)
> > |INFO|INDEXING INFO: Start Indexing new content.
> > |INFO|INDEXING INFO: Index Folder Did Not Exist. Start
> > Creation Of New
> > Index
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING INFO: Beginnging Incremental update
> > comparisions
> > |INFO|INDEXING ERROR: Unable to index new content Lock obtain
> > timed out:
> >
> >
>
Lock@/usr/tomcat/jakarta-tomcat-5.0.19/temp/lucene-398fbd170a5457d05e2f4d432
> > 10f7fe8-write.lock
> >
> > |ENTER|UpdateCacheEventProcessor.visit(ContentNodeDeleteEvent)
> >
> > Here is my code. You will recognize it pretty much as the
> > IndexHTML class
> > from the Lucene demo written by Doug Cutting. I have put a
> > ton of comments
> > in a attempt to understand what is going on.
> >
> > Any help would be appreciated.
> >
> > Luke
> >
> > package com.fbhm.bolt.search;
> >
> > /*
> > * Created on Nov 11, 2004
> > *
> > * This class will create a single index file for the Content
> > * Management System (CMS). It contains logic to ensure
> > * indexing is done "intelligently". Based on IndexHTML.java
> > * from the demo folder that ships with Lucene
> > */
> >
> > import java.io.File;
> > import java.io.IOException;
> > import java.util.Arrays;
> > import java.util.Date;
> >
> > import org.apache.lucene.analysis.standard.StandardAnalyzer;
> > import org.apache.lucene.document.Document;
> > import org.apache.lucene.index.IndexReader;
> > import org.apache.lucene.index.IndexWriter;
> > import org.apache.lucene.index.Term;
> > import org.apache.lucene.index.TermEnum;
> > import org.pdfbox.searchengine.lucene.LucenePDFDocument;
> > import org.apache.lucene.demo.HTMLDocument;
> >
> > import com.alaia.common.debug.Trace;
> > import com.alaia.common.util.AppProperties;
> >
> > /**
> > * @author lshannon Description: <br
> > * This class is used to index a content folder. It
> > contains logic to
> > * ensure only new or documents that have been modified
> > since the last
> > * search are indexed. <br
> > * Based on code writen by Doug Cutting in the IndexHTML
> > class found in
> > * the Lucene demo
> > */
> > public class Indexer {
> > //true during deletion pass, this is when the index already
> > exists
> > private static boolean deleting = false;
> >
> > //object to read existing indexes
> > private static IndexReader reader;
> >
> > //object to write to the index folder
> > private static IndexWriter writer;
> >
> > //this will be used to write the index file
> > private static TermEnum uidIter;
> >
> > /*
> > * This static method does all the work, the end result is
> > an up-to-date
> > index folder
> > */
> > public static void Index() {
> > //we will assume to start the index has been created
> > boolean create = true;
> > //set the name of the index file
> > String indexFileLocation =
> >
> >
> AppProperties.getPropertyAsString("bolt.search.siteIndex.index.root");
> > //set the name of the content folder
> > String contentFolderLocation =
> > AppProperties.getPropertyAsString("site.root");
> > //manage whether the index needs to be created or not
> > File index = new File(indexFileLocation);
> > File root = new File(contentFolderLocation);
> > //the index file indicated exists, we need an incremental
> > update of the
> > // index
> > if (index.exists()) {
> > Trace.TRACE("INDEXING INFO: An index folder exists at: " +
> > indexFileLocation);
> > deleting = true;
> > create = false;
> > try {
> > //this version of index docs is able to execute the
> > incremental
> > // update
> > indexDocs(root, indexFileLocation, create);
> > } catch (Exception e) {
> > //we were unable to do the incremental update
> > Trace.TRACE("INDEXING ERROR: Unable to execute
> > incremental update "
> > + e.getMessage());
> > }
> > //after exiting this loop the index should be current with
> > content
> > Trace.TRACE("INDEXING INFO: Incremental update
> > completed.");
> > }
> > try {
> > //create the writer
> > writer = new IndexWriter(index, new StandardAnalyzer(),
> > create);
> > //configure the writer
> > writer.mergeFactor = 10000;
> > writer.maxFieldLength = 100000;
> > try {
> > //get the start date
> > Date start = new Date();
> > //call the indexDocs method, this time we will add new
> > // documents
> > Trace.TRACE("INDEXING INFO: Start Indexing new
> > content.");
> > indexDocs(root, indexFileLocation, create);
> > Trace.TRACE("INDEXING INFO: Indexing new content
> > complete.");
> > //optimize the index
> > writer.optimize();
> > //close the writer
> > writer.close();
> > //get the end date
> > Date end = new Date();
> > long totalTime = end.getTime() - start.getTime();
> > Trace.TRACE("INDEXING INFO: All Indexing Operations
> > Completed in "
> > + totalTime + " milliseconds");
> > } catch (Exception e1) {
> > //unable to add new documents
> > Trace.TRACE("INDEXING ERROR: Unable to index new content
> > "
> > + e1.getMessage());
> > }
> > } catch (IOException e) {
> > Trace.TRACE("INDEXING ERROR: Unable to create IndexWriter
> > "
> > + e.getMessage());
> > }
> > }
> >
> > /*
> > * Walk directory hierarchy in uid order, while keeping uid
> > iterator from
> > /*
> > * existing index in sync. Mismatches indicate one of: (a)
> > old documents
> > to
> > /*
> > * be deleted; (b) unchanged documents, to be left alone; or
> > (c) new /*
> > * documents, to be indexed.
> > */
> >
> > private static void indexDocs(File file, String index,
> > boolean create)
> > throws Exception {
> > //the index already exists we do an incremental update
> > if (!create) {
> > Trace.TRACE("INDEXING INFO: Incremental Update Request
> > Confirmed");
> > //open existing index
> > reader = IndexReader.open(index);
> > //this gets an enummeration of uid terms
> > uidIter = reader.terms(new Term("uid", ""));
> > //jump to the index method that does the work
> > //this will use the Iteration above and does
> > //all the "smart" indexing
> > indexDocs(file);
> > //this will be true everytime the index already existed
> > //we are not going to delete documents that are old
> > if (deleting) {
> > Trace.TRACE("INDEXING INFO: Deleting Old Content Phase
> > Started. All
> > Deleted Docs will be listed.");
> > while (uidIter.term() != null
> > && uidIter.term().field() == "uid") {
> > //basically we are deleting all the document we have
> > // indexed before
> > Trace.TRACE("INDEXING INFO: Deleting document "
> > + HTMLDocument.uid2url(uidIter.term().text()));
> > //delete the term from the reader
> > reader.delete(uidIter.term());
> > //go to the nextfield
> > uidIter.next();
> > }
> > Trace.TRACE("INDEXING INFO: Deleting Old Content Phase
> > Completed");
> > //turn off the deleting flag
> > deleting = false;
> > }//close the deleting branch
> > //close the enummeration
> > uidIter.close(); // close uid iterator
> > //close the reader
> > reader.close(); // close existing index
> >
> > }
> > //we go here is the index already existed
> > else {
> > Trace.TRACE("INDEXING INFO: Index Folder Did Not Exist.
> > Start Creation
> > Of
> > New Index");
> > // don't have exisiting
> > indexDocs(file);
> > }
> > }
> >
> > private static void indexDocs(File file) throws Exception {
> > //check if we are at the top of a directory
> > if (file.isDirectory()) {
> > //get a list of the files
> > String[] files = file.list();
> > //sort them
> > Arrays.sort(files);
> > //index each file in the directory recursively
> > //we keep repeating this logic until we hit a
> > //file
> > for (int i = 0; i < files.length; i++)
> > //pass in the parent directory and the current file
> > //into the file constructor and index
> > indexDocs(new File(file, files[i]));
> >
> > }
> > //we have an actual file, so we need to consider the
> > //file extensions so the correct Document is created
> > else if (file.getPath().endsWith(".html")
> > || file.getPath().endsWith(".htm")
> > || file.getPath().endsWith(".txt")
> > || file.getPath().endsWith(".doc")
> > || file.getPath().endsWith(".xml")
> > || file.getPath().endsWith(".pdf")) {
> >
> > //if this is reached it means we were in the midst
> > //of an incremental update
> > if (uidIter != null) {
> > //get the uid for the document we are on
> > String uid = HTMLDocument.uid(file);
> > //now compare this document to the one we have in the
> > //enummeration of terms.
> > //if the term in the enummeration is less than the
> > //term we are on it must be deleted (if we are indeed
> > //doing an incrementatal update)
> > Trace.TRACE("INDEXING INFO: Beginnging Incremental update
> > comparisions");
> > while (uidIter.term() != null
> > && uidIter.term().field() == "uid"
> > && uidIter.term().text().compareTo(uid) < 0) {
> > //delete stale docs
> > if (deleting) {
> > reader.delete(uidIter.term());
> > }
> > uidIter.next();
> > }
> > //if the terms are equal there is no change with this
> > document
> > //we keep it as is
> > if (uidIter.term() != null && uidIter.term().field() ==
> > "uid"
> > && uidIter.term().text().compareTo(uid) == 0) {
> > uidIter.next();
> > }
> > //if we are not deleting and the document was not there
> > //it means we didn't have this document on the last index
> > //and we should add it
> > else if (!deleting) {
> > if (file.getPath().endsWith(".pdf")) {
> > Document doc = LucenePDFDocument.getDocument(file);
> > Trace.TRACE("INDEXING INFO: Adding new document to the
> > existing
> > index:
> > "
> > + doc.get("url"));
> > writer.addDocument(doc);
> > } else if (file.getPath().endsWith(".xml")) {
> > Document doc = XMLDocument.Document(file);
> > Trace.TRACE("INDEXING INFO: Adding new document to the
> > existing
> > index:
> > "
> > + doc.get("url"));
> > writer.addDocument(doc);
> > } else {
> > Document doc = HTMLDocument.Document(file);
> > Trace.TRACE("INDEXING INFO: Adding new document to the
> > existing
> > index:
> > "
> > + doc.get("url"));
> > writer.addDocument(doc);
> > }
> > }
> > }//end the if for an incremental update
> > //we are creating a new index, add all document types
> > else {
> > if (file.getPath().endsWith(".pdf")) {
> > Document doc = LucenePDFDocument.getDocument(file);
> > Trace.TRACE("INDEXING INFO: Adding a new document to the
> > new index: "
> > + doc.get("url"));
> > writer.addDocument(doc);
> > } else if (file.getPath().endsWith(".xml")) {
> > Document doc = XMLDocument.Document(file);
> > Trace.TRACE("INDEXING INFO: Adding a new document to the
> > new index: "
> > + doc.get("url"));
> > writer.addDocument(doc);
> > } else {
> > Document doc = HTMLDocument.Document(file);
> > Trace.TRACE("INDEXING INFO: Adding a new document to the
> > new index: "
> > + doc.get("url"));
> > writer.addDocument(doc);
> > }//close the else
> > }//close the else for a new index
> > }//close the else if to handle file types
> > }//close the indexDocs method
> >
> > }
> >
> >
> > ----- Original Message -----
> > From: "Craig McClanahan" <[EMAIL PROTECTED]
> > To: "Jakarta Commons Users List"
> > <[EMAIL PROTECTED]
> > Sent: Thursday, November 11, 2004 6:13 PM
> > Subject: Re: avoiding locking
> >
> >
> > In order to get any useful help, it would be nice to know
> > what you are
> > trying to do, and (most importantly) what commons component
> > is giving
> > you the problem :-). The traditional approach is to put a
> > prefix on
> > your subject line -- for commons package "foo" it would be:
> >
> > [foo] avoiding locking
> >
> > It's also generally helpful to see the entire stack trace,
> > not just
> > the exception message itself.
> >
> > Craig
> >
> >
> > On Thu, 11 Nov 2004 17:27:19 -0500, Luke Shannon
> > <[EMAIL PROTECTED] wrote:
> > What can I do to avoid locking issues?
> >
> > Unable to execute incremental update Lock obtain timed out:
> >
> >
>
Lock@/usr/tomcat/jakarta-tomcat-5.0.19/temp/lucene-398fbd170a5457d05e2f4d432
> > 10f7fe8-write.lock
> >
> > Thanks,
> >
> > Luke
> >
> >
> >
> >
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> >
> >
> >
> >
> >
> >
> >
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> >
> >
> >
> >
> >
> >
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> >
>
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