[NUTCH-683] NUTCH-676 broke CrawlDbMerger

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.0.0
• Fix Version/s: 1.0.0
• Assignee: Dogacan Guney
• Reporter: Dogacan Guney
• Created: 29/Jan/09 19:45
• Updated: 10/Apr/09 12:29
• Resolved: 11/Feb/09 09:14

Description

Switch to hadoop's MapWritable broke CrawlDbMerger. Part of the reason is that we reuse the same MapWritable instance during reduce
which apparently is a big no-no for hadoop's MapWritable. Also, hadoop's MapWritable#putAll doesn't work (I think.... see HADOOP-5142),
so we should also work around that.