On again, off again... I managed to fix my mysql install: CREATE USER 'hive'@'%' IDENTIFIED BY 'passwd';
GRANT ALL PRIVILEGES ON hive.* TO 'hive'@'%';
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Interesting, I was seeing significant speedups even with maps running symmetrical data nodes. So the only downside is the initial setup time is greater with dynamic strategy.
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Actually, I checked that ExportSnapshot includes the Tools interface, hence it does support -files and -libjars so I think the approach is still good. Sorry, false panic.
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