- 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
- introduced blocking queues in CrawlStacker to make it ready for concurrency
- added a second busy thread for the CrawlStacker
The CrawlStacker is multithreaded. It shall be transformed into a BlockingThread in another step.
The concurrency of the stacker will hopefully solve some problems with cases where DNS blocks.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5395 6c8d7289-2bf4-0310-a012-ef5d649a1542
- removed never-used secondary crawl depth
- added a must-not-match filter that can be used to exclude urls from a crawl
- added stub for crawl tags which will be used to identify search results that had been produced from specific crawls
please update the yacybar: replace property name 'crawlFilter' with 'mustmatch'.
Additionally, a new parameter named 'mustnotmatch' can be used, which should be by default the empty sring (match-never)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5342 6c8d7289-2bf4-0310-a012-ef5d649a1542
- dates are now saved as String.valueOf(TimeStamp)
- it might be a good idea to delete (backup) bookmarkDates.db and restart YaCy to rebuild it
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5066 6c8d7289-2bf4-0310-a012-ef5d649a1542
- fixed "Inefficient use of keySet iterator instead of entrySet iterator" [WMI_WRONG_MAP_ITERATOR, FindBugs]
- fixed some possible null pointer accesses
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5063 6c8d7289-2bf4-0310-a012-ef5d649a1542
- removed unnecessary code (unused variables, String.toString)
- corrected some calculations (cast int to double or long ;)
- improved little performance (using Integer.valueOf() instead of new Integer)
- log if some File-actions fail (mkdir(), delete(), ...) and some ignored exceptions
- finalized some (more) fields
- finally close some streams
- made inner classes static if not using environment
- generalized some equals (from specificClass to Object)
- fixed some potential nullpointer accesses
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5039 6c8d7289-2bf4-0310-a012-ef5d649a1542
- the serverBusyThread checks folders every 60 min. (==> autoReCrawl_idlesleep in yacy.conf)
- added option to create bookmarks from CrawlStart URL
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5033 6c8d7289-2bf4-0310-a012-ef5d649a1542
- moved constants from plasmaSwitchboard to own class (all 232 ;)
- moved remoteProxy-Methods to httpRemoteProxyConfig, better names
- removed some unnecessary code (else-statements)
* formatting (correct indentation)
* minor bugfixes (due to findbugs.sf.net)
* hopefully fixed "missing quote" (announcing StringParts as UTF-8)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5031 6c8d7289-2bf4-0310-a012-ef5d649a1542
many classes used the kelondroMapDataMining (was: kelondroMapObjects) which adds statistical
functions to the kelondroMap (was: kelondroObjects), but these functions were not used by these
classes. Especially the HTCACHE and robots.txt database allocate a very large number of objects
for statistical use, but never used them. By replacing the kelondroMapDataMining with the
kelondroMap object for these classes now less memory is allocated.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4986 6c8d7289-2bf4-0310-a012-ef5d649a1542
- moved some already existing servlets to this menu
- renamed the skin servlet to appearance
- added a set-to-default-button to the search page appearance setting
- removed the peer profile servlet which is now replaced by a field in the new appearance servlet
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4980 6c8d7289-2bf4-0310-a012-ef5d649a1542
- introduced a new BLOB file format: kelondroBLOBHeap. This is a flat file with an index in RAM.
very similar to the eco-tables, but with flexible value sizes. It will replace the kelondroBLOBTree,
which is based on a kelondroTree, a file-AVL-based index data structure.
- the HTCACHE header file was replaced by the new blob heap file structure
- the robots.txt file was replaced by the new blob heap file structure
- the robots parser was enhanced (bugfixing for double-loading of the same robots.txt)
- other BLOB-dependent data structures were prepared to use also the new BLOB heap
- fixed a bug in the snippet fetch process: the file header was not written to the header index
There should now be less IO during snippet fetch and during crawling
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4978 6c8d7289-2bf4-0310-a012-ef5d649a1542
find a better way to store BLOBs; generalize current BLOG data structure (kelondroDyn)
and prepare it to replace it with something better. The best candidate is the kelondroHeap,
which will become the kelondroBLOBHeap;
removed also some never-used classes
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4902 6c8d7289-2bf4-0310-a012-ef5d649a1542
- refactoring of word/phrase handling: word abstraction from condenser becomes part of index element handling
- removed unused code parts from condenser
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4603 6c8d7289-2bf4-0310-a012-ef5d649a1542
- removed mainly unused init-time for databases (was only used for tree tables, which are not used any more)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4496 6c8d7289-2bf4-0310-a012-ef5d649a1542
orbiter