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From Seth Ladd <sethl...@gmail.com>
Subject Re: When does a row become highly available?
Date Fri, 11 Dec 2009 18:50:03 GMT
>> So do all writes go through the Master?  Clearly I'm a bit confused here :)
>
> No. The Region Server logs every write in the WAL. If the machine
> fails, then whatever is in that WAL will be replayed by the Master
> because he's the one noticing the failure. He will then redistribute

Ah, is the WAL stored in HDFS as well?

Thanks for your helpful and quick replies,
Seth

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