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Question about namenode HA
Hi Todd and other HA experts,

I've two question:

1) why the zkfc is a seperate process, i mean, what's the primary design consideration that we didn't integrate zkfc features into namenode self ?

2) If i deploy CDH4.1(included QJM feature),  since QJM can do fencing writer,  so can i just config like this safely ?
        <name>dfs.ha.fencing.methods</name>
        <value>shell(/bin/true)</value>

Thanks,
Liang
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Steve Loughran 2012-10-15, 10:16
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Todd Lipcon 2012-10-16, 01:24
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Chao Shi 2012-10-17, 14:31