Oli's Blog

• Anleitung (engl.) von www.ifixit.com
• Video von Macwelt

• OS-X 10.4 installiert,
• die alte Platte in ein USB-Gehäuse eingebaut und an meinen Mac angeschlossen,
• die User-Daten von der alten auf die neue Platte rüberkopiert (per Kommandozeile und tar- bzw. cp-Kommando).

I started a proof of concept if Lucence could be used for searching in log files. Here a first result of the indexer (see also benchmarks of the Lucene site):

Hardware Environment


• Dedicated machine for indexing: yes
• CPU: Intel Pentium M, 1.6 GHz, 1 processor
• RAM: 2 GB
• Drive configuration: IDE 2,5" hard disk (in a Dell Lititude D810 notebook)

Software environment


• Lucene Version: 2.2.0
• Java Version: Java SE 1.6.0_02
• Java VM: client VM
• OS Version: WinXP with SP1
• Location of index: local

Lucene indexing variables


• Number of source documents: 9
• Total filesize of source documents: 15 MB
• Average filesize of source documents:2 MB
• Source documents storage location: Filesystem
• File type of source documents: log files
• Parser(s) used, if any:
• Analyzer(s) used: StandardAnalyzer
• Number of fields per document: 3
• Type of fields: text
• Index persistence: FSDirectory
• Index size: 3 MB

Figures


• Time taken (in ms/s as an average of at least 3 indexing
  runs): 7 s (first try: 37 s -> ignored)
• Time taken / 1000 docs indexed: 150 s (estimated)
• Memory consumption: started with -Xmx128m -Xms128m
• Query speed: not yet measured

Notes


• Note: first prototype, no special tuning/strategies
• Note: maxFieldLength set to 1,000,000 (default of 10,000 was to small)

Symptoms

<Ctrl>-Shift-T (Open Type) does not work suddenly.

Solution

Close the Java perspective and open it again.

Alternativly: delete workspace and set it up again (but this is not really what you want).

What is Lucene? A search engine? Nearly - it is more a toolset consisting an indexer and a search engine. If you want to start with Lucene take a look in the Getting Started document. It gives you a good feeling how to use Lucene.

A google-like search engine based on Lucence seems to be Red Piranha. I haven't it tested yet but the screenshots looks promising.

Yesterday I had to problem to compare 2 different versions of jsse.jar. Clirr was the tool of my choice. Also the development seems to be stopped (the last version was from September 2005) the tool does exactly what I need.

There are thousands of blogs. But no one of it is from me or for me. Why not create my own blog? - So here it is! In the future it may be interesting also for other people but at he moment my main goals are:

• just for learning
• to have a place to collect some hints for Java and AspectJ programmer
• to improve my English (so if you find an error please send it to me)

A few words about me: i come from S-Germany and my main interests are Java / JEE since 1999. Since 2003 I was infected by the AspectJ virus from Arno Schmidmeier on the ApectJ Summer Camp. Two years later I organized the ApectJ Winter Camp

My main home page is www.aosd.de. At the moment of this writing I have holidays. So don't expect any (technical) news or announcements in the next time.