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From A J <>
Subject Update of value for a given name
Date Tue, 15 Feb 2011 20:23:43 GMT
If I update a column (i.e. change the value contents for a given name in a
given key), is the physical disk operation equivalent to delete followed by
Or is it just insert somehow making the last value marked as stale ?

In the definite guide, it says the following about SSTable:
*All writes are sequential, which is the primary reason that writes perform
so well in Cassandra. No reads or seeks of any kind are required for writing
a value to Cassandra because all writes are append operations.*
It made me wonder how updates work, if it is append only.

I am new to cassandra so please let me know if I am missing something basic.


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