Deleting Content Sources and effects
Thanks Calvin for the heads up. I am sure many of us have wondered why they were still there for so long, and the painful response times.
http://calvin998.wordpress.com/2007/11/07/findings-on-sharepoint-search-bdc/
After a content source is deleted, the index items of the content source will NOT be deleted immediately. Instead, the SharePoint “Gather” will delete them one by one at the background, and a warning message will be generated for each deleted items! It seems no full crawl can be done before this process is finished (at least no BDC crawling). It will take more than a day to remove 1.5 M records - aboutn 600 records a minute. Slooooooow! If one just want to erase all indexed content, one can click on “Reset all crawled content” link on search setting page. That is very fast.
It seems no way to purge the humongous crawl log. MS site says it will deleted after 5 days - to be confirmed.
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