[NUTCH-2623] Fetcher to guarantee delay for same host/domain/ip independent of http/https protocol

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.14
• Fix Version/s: 1.16
• Component/s: fetcher
• Assignee: Unassigned
• Reporter: Sebastian Nagel
• Created: 23/Jul/18 13:28
• Updated: 28/Jan/21 13:56
• Resolved: 07/Oct/18 19:12

Description

 Fetcher uses a combination of protocol and host/domain/ip as ID for fetch item queues, see FetchItem.java. This inhibits a guaranteed delay, in case both http:// and https:// URLs are fetched from the same host/domain/ip, e.g. here with a large delay of 30 sec.:

2018-07-23 14:54:39,834 INFO fetcher.FetcherThread - FetcherThread 24 fetching http://nutch.apache.org/ (queue crawl delay=30000ms)
2018-07-23 14:54:39,846 INFO fetcher.FetcherThread - FetcherThread 23 fetching https://nutch.apache.org/ (queue crawl delay=30000ms)

Issue Links

• links to: GitHub Pull Request #369