- 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
- implemented vertical DHT acceptance ("my own DHT") to accept new targets
- added new target computation for global search: addresses vertical targets also
- enhanced remote crawling: collection of remote crawl urls if queue has less than 100 entries (was: 0 entries)
- better performance value computations for PPM selection in network configuration
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5319 6c8d7289-2bf4-0310-a012-ef5d649a1542
- removed distinction between header file types for http and ftp; ftp is simulated by using http properties
- removed all old resourceInfo classes that handled this distinction
- introduced a new distinction between http request and http response objects
- unified new response objects with two other object types that had been introduced elsewhere
- changed all servlet call methods to use the new http request header object type
- divided static object keys for http header properties into request and response types
- refactoring here and there (a large number of type changes and many methods merged/moved)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5079 6c8d7289-2bf4-0310-a012-ef5d649a1542
- no more keep-order parameter in remove (it was not possible to make this strict, and not useful)
- some small enhancements in balancer
- robots parser without references in switchboard
- changes synchronization in robots
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4969 6c8d7289-2bf4-0310-a012-ef5d649a1542
A large refactoring was neccessary
- added another crawl start option: automatic restriction to sub-path
- removed crawlStartSimple and renamed crawl start expert
to crawl start (without expert)
- some changes to texts in crawl start
- added some more deletions when an web index is deleted:
delete also queues and robots cache
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4881 6c8d7289-2bf4-0310-a012-ef5d649a1542
from the ConfigNetwork online interface
- to make this possible, a large refactoring and reorganisation of data structures was necessary
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4803 6c8d7289-2bf4-0310-a012-ef5d649a1542
This change is inspired by the need to see a network connected to the index it creates in a indexing team.
It is not possible to divide the network and the index. Therefore all control files for the network was moved to the network within the INDEX/<network-name> subfolder.
The remaining YACYDB is superfluous and can be deleted.
The yacyDB and yacyNews data structures are now part of plasmaWordIndex. Therefore all methods, using static access to yacySeedDB had to be rewritten. A special problem had been all the port forwarding methods which had been tightly mixed with seed construction. It was not possible to move the port forwarding functions to the place, meaning and usage of plasmaWordIndex. Therefore the port forwarding had been deleted (I guess nobody used it and it can be simulated by methods outside of YaCy).
The mySeed.txt is automatically moved to the current network position. A new effect causes that every network will create a different local seed file, which is ok, since the seed identifies the peer only against the network (it is the purpose of the seed hash to give a peer a location within the DHT).
No other functional change has been made. The next steps to enable network switcing are:
- shift of crawler tables from PLASMADB into the network (crawls are also network-specific)
- possibly shift of plasmaWordIndex code into yacy package (index management is network-specific)
- servlet to switch networks
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4765 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
this is another step to enable multiple, concurrent fulltext-indexes
- another try to make the yacy-httpc more stable
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4602 6c8d7289-2bf4-0310-a012-ef5d649a1542
- separated sidebars in new search interface and placed them in their own files
which can be put in into the search page like plug-ins
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4529 6c8d7289-2bf4-0310-a012-ef5d649a1542
- remove direct accesses to SimpleDateFormat fields in serverDate and use the static parse... methods instead
- remove nowDate() as a Date doesn't store timezone information and a new Date() is always faster
- default formatter methods use a GMT timezone by default now, this is important for interchangability as some date formats we use don't include a timezone offset.
- continued renaming and rearanging (formatter) methods. all should follow the general naming scheme formatWHAT(...)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4285 6c8d7289-2bf4-0310-a012-ef5d649a1542
- the index administration now uses the same code base for url selection and collection
as the search interface. The index administration is therefore a good test environment for
ranking order control
- removed old postsorting-algorithms, will be replaced with new one
- fixed many bugs occurred before during ranking; especially the contraint filtering method
removed too many links
- fixed media search flags; had been attached to too many urls. The effect should be a better
pre-sorting before media load within snippet fetch
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4223 6c8d7289-2bf4-0310-a012-ef5d649a1542
to do this, the index administration interface was extended.
It is now possible to select parts of a index.
See properties shown in interface after a word search for details.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4218 6c8d7289-2bf4-0310-a012-ef5d649a1542
