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From Alvin UW <alvi...@gmail.com>
Subject Does the secondary index in 0.7 cost extra space like an extra ColumnFamily?
Date Thu, 07 Oct 2010 00:17:21 GMT
Hello,

Before 0.7, actually we can create an extra ColumnFamily as an secondary
index, if we need.

I was wondering whether the secondary index mechanism in 0.7 just likes
creating an extra ColumnFamily as an index.
The difference is only that users don't take care of the maintainence of the
secondary index, instead the system will maintain it.
Hence, the secondary index is also a redundant copy, which costs extra space
as the same as creating an extra ColumnFamily as an index.

Am I right?
Thanks.


Alvin

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