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https://issues.apache.org/jira/browse/HDFS-11283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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chenrongwei updated HDFS-11283:
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Description:
why should we not introduce distributed database to storage hdfs's metadata?
In my opinion,it maybe loss some performance,but it has below improvements:
1、enhance NN's extend ability,such as NN can support much more files and
blocks. The problem of massive little files always make me headache.
2、In most MR cluster aren't care the performance loss,but more care the
cluster's scale.
3、NN's HA implements maybe more simpler and reasonable.
so I think maybe we should add a new work mode building on distributed database
for NN.
was:
why should we not introduce distributed database to storage hdfs's metadata?
In my opinion,it maybe loss some performance,but it has below improvements:
1、enhance NN's extend ability,such as NN can support much more files and
blocks. The problem of massive little files always make me headache.
2、In most MR cluster aren't care the performance loss,but more care the
cluster's scale.
3、NN's HA implements maybe more simpler and reasonable.
> why should we not introduce distributed database to storage hdfs's metadata?
> -----------------------------------------------------------------------------
>
> Key: HDFS-11283
> URL: https://issues.apache.org/jira/browse/HDFS-11283
> Project: Hadoop HDFS
> Issue Type: Wish
> Reporter: chenrongwei
>
> why should we not introduce distributed database to storage hdfs's metadata?
> In my opinion,it maybe loss some performance,but it has below improvements:
> 1、enhance NN's extend ability,such as NN can support much more files and
> blocks. The problem of massive little files always make me headache.
> 2、In most MR cluster aren't care the performance loss,but more care the
> cluster's scale.
> 3、NN's HA implements maybe more simpler and reasonable.
> so I think maybe we should add a new work mode building on distributed
> database for NN.
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