high-performance search query situations as seen in yacy-metager integration showed deadlock situation caused by synchronization effects inside of sun.java code. It appears that the logger is not completely safe against deadlock situations in concurrent calls of the logger. One possible solution would be a outside-synchronization with 'synchronized' statements, but that would further apply blocking on all high-efficient methods that call the logger. It is much better to do a non-blocking hand-over of logging lines and work off log entries with a concurrent log writer. This also disconnects IO operations from logging, which can also cause IO operation when a log is written to a file. This commit not only moves the logger from kelondro to yacy.logging, it also inserts the concurrency methods to realize non-blocking logging.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6078 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added a analysis method that counts bytes that could be saved in case the new HandleMap can be applied in the most efficient way. Look for the log messages beginning with "HeapReader saturation": in most cases we could save about 30% RAM!
- removed the old FlexTable database structure. It was not used any more.
- removed memory statistics in PerformanceMemory about flex tables and node caches (node caches were used by Tree Tables, which are also not used any more)
- add a stub for a steering of navigation functions. That should help to switch off naviagtion computation in cases where it is not demanded by a client
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6034 6c8d7289-2bf4-0310-a012-ef5d649a1542
divided that class into three parts:
- the peers object is now hosted by the plasmaSwitchboard
- the crawler elements are now in a new class, crawler.CrawlerSwitchboard
- the index elements are core of the new segment data structure, which is a bundle of different indexes for the full text and (in the future) navigation indexes and the metadata store. The new class is now in kelondro.text.Segment
The refactoring is inspired by the roadmap to create index segments, the option to host different indexes on one peer.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5990 6c8d7289-2bf4-0310-a012-ef5d649a1542
This removes the last very IO-intensive data structures which were still used for Wiki, Blog and Bookmarks. Old database files will still remain in the DATA subdirectory but can be deleted manually if no major bugs appear during migration. There is no need for any user action, all migration is done automatically.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5986 6c8d7289-2bf4-0310-a012-ef5d649a1542
Other file sizes can now be configured with the attributes
filesize.max.win and filesize.max.other
the default maximum file size for non-windows OS is now 32GB
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5974 6c8d7289-2bf4-0310-a012-ef5d649a1542
Existing indexes based on the old index collections must be migrated with YaCy 0.8
- removed index collection classes and all migration tools
- added a 'incell' reference collection feature in URL analysis
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5966 6c8d7289-2bf4-0310-a012-ef5d649a1542
*) implemented contains() in class AbstractBlacklist
*) used new method in Blacklist_p to prevent double entries in blacklists
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5832 6c8d7289-2bf4-0310-a012-ef5d649a1542
terms (words) are not any more retrieved by their word hash string, but by a byte[] containing the word hash.
this has strong advantages when RWIs are sorted in the ReferenceContainer Cache and compared with the sun.java TreeMap method, which needed getBytes() and new String() transformations before.
Many thousands of such conversions are now omitted every second, which increases the indexing speed by a factor of two.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5812 6c8d7289-2bf4-0310-a012-ef5d649a1542
- removed historic, possibly unused code from wiki parser that was in conflict with actual wikipedia wiki code
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5790 6c8d7289-2bf4-0310-a012-ef5d649a1542
This was done to prepare the wiki parser as parser for wikipedia dumps, which will be used for performance test (to omit crawling)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5785 6c8d7289-2bf4-0310-a012-ef5d649a1542
This is a preparation to introduce other index tables as used now only for reverse text indexes. Next application of the reverse index is a citation index.
Moved to version 0.74
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5777 6c8d7289-2bf4-0310-a012-ef5d649a1542
this option was never used and there is also no use to set other columns but the first as the primary key. as a result, access methods to the key do not need to compute key positions, and they work faster.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5711 6c8d7289-2bf4-0310-a012-ef5d649a1542
java -Xmx1000m -cp classes de.anomic.data.URLAnalysis -incollection DATA/INDEX/freeworld/TEXT/RICOLLECTION used.dump
java -Xmx1000m -cp classes de.anomic.data.URLAnalysis -diffurlcol DATA/INDEX/freeworld/TEXT used.dump diffurlcol.dump
java -Xmx1000m -cp classes de.anomic.data.URLAnalysis -export DATA/INDEX/freeworld/TEXT xml urls.xml diffurlcol.dump
java -Xmx1000m -cp classes de.anomic.data.URLAnalysis -delete DATA/INDEX/freeworld/TEXT diffurlcol.dump
The export-feature is optional, the purpose of that function is to provide a back-up function for URLs to be deleted. The export function can also be used to create html files with embedded links and simple text-files. Simply replace the 'xml' word with 'html' or 'text'. The last argument in the cann, the diffurlcol.dump value, can also be omitted. This will cause that the complete URL database is exported. This is an alternative to the Web-Interface based export function.
The delete-feature is the only destructive method of the four presented here. Please use it with care. It is better to make a back-up of the url database files before starting the deletion.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5694 6c8d7289-2bf4-0310-a012-ef5d649a1542
to use this, you must user the -incollection command before (see SVN 5687) and you need a
used.dump file that has been produced with that process.
Now you can use that file, to do a URL-hash compare with the urls in the URL-DB. To do that, execute
java -Xmx1000m -cp classes de.anomic.data.URLAnalysis -diffurlcol DATA/INDEX/freeworld/TEXT used.dump diffurlcol.dump
or use different names for the dump files or more memory.
As a result, you get the file diffurlcol.dump which contains all the url hashes that occur in the URL database, but not in the collections.
The file has the format
{hash-12}*
that means: 12 byte long hashes are listed without any separation.
The next step could be to process this file and delete all these URLs with the computed hashes, or to export them before deletion.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5692 6c8d7289-2bf4-0310-a012-ef5d649a1542
- fix for problem in httpdFileHandler: mising close of open Files if tempate cache was disabled
- more memory for DHT selection required
- stub for URL reference hash statistics in index collections
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5682 6c8d7289-2bf4-0310-a012-ef5d649a1542
especially loading of favicons in search results. This is a fix that
affects only searches in intranet/repository configurations.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5670 6c8d7289-2bf4-0310-a012-ef5d649a1542
- check the list and kick out entries with lines that contain not valid urls
- normalize the urls
- remove doubles
- sort the list
- split the list in smaller chunks
This is all done in one process which can be called with a new -sort option
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5655 6c8d7289-2bf4-0310-a012-ef5d649a1542
url lists can also be compressed with gzip
If such a file is handed over to URLAnalysis, the output will also be written as .gz-file
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5652 6c8d7289-2bf4-0310-a012-ef5d649a1542
This can be used like
java -Xmx2000m -cp classes de.anomic.data.URLAnalysis -host DATA/EXPORT/20090224213823.txt
changed als the call method to generate statistics, please use now
java -Xmx2000m -cp classes de.anomic.data.URLAnalysis -stat DATA/EXPORT/20090224213823.txt
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5650 6c8d7289-2bf4-0310-a012-ef5d649a1542
- some hacks for less memory usage:
-- less usage of buffer and cache memory in EcoFS
-- buffer allocation on-demand in BufferedIOChunks
-- removed largest ybr idx
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5595 6c8d7289-2bf4-0310-a012-ef5d649a1542
- after a index selection is made, the index is splitted into its vertical components
- from differrent index selctions the splitted components can be accumulated before they are placed into the transmission queue
- each splitted chunk gets its own transmission thread
- multiple transmission threads are started concurrently
- the process can be monitored with the blocking queue servlet
To implement that, a new package de.anomic.yacy.dht was created. Some old files have been removed.
The new index distribution model using a vertical DHT was implemented. An abstraction of this model
is implemented in the new dht package as interface. The freeworld network has now a configuration
of two vertial partitions; sixteen partitions are planned and will be configured if the process is bug-free.
This modification has three main targets:
- enhance the DHT transmission speed
- with a vertical DHT, a search will speed up. With two partitions, two times. With sixteen, sixteen times.
- the vertical DHT will apply a semi-dht for URLs, and peers will receive a fraction of the overall URLs they received before.
with two partitions, the fractions will be halve. With sixteen partitions, a 1/16 of the previous number of URLs.
BE CAREFULL, THIS IS A MAJOR CODE CHANGE, POSSIBLY FULL OF BUGS AND HARMFUL THINGS.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5586 6c8d7289-2bf4-0310-a012-ef5d649a1542
