Indeed this makes sense for map keys and set values, but AFAIU from the
docs this also applies to map and list _values_: " The maximum size of
an item in a collection is 64K"
http://www.datastax.com/documentation/cql/3.0/cql/cql_using/use_collections_c.html
Or are collection values also represented as keys?
Sylvain
Le 03/01/2015 20:50, Jack Krupansky a écrit :
See: https://issues.apache.org/jira/browse/CASSANDRA-5355
"Collections values are currently limited to 64K because the
serialized form used uses shorts to encode the elements length (and
for sets elements and key map, because they are part of the internal
column name that is itself limited to 64K)."
-- Jack Krupansky
On Sat, Jan 3, 2015 at 2:31 PM, Sylvain Wallez <sylv...@apache.org
<mailto:sylv...@apache.org>> wrote:
From what I understand from the docs, the 64k limit applies to
both the number of items in a collection and the size of its elements?
Why is there a constraint on value size in collections, when other
types such as blob or text can be larger?
Thanks,
Sylvain
Le 01/01/2015 20:04, DuyHai Doan a écrit :
Storage-engine wise, they are almost equivalent, thought there
are some minor differences:
1) with Set structure, you cannot store more that 64kb worth of data
2) collections and maps are loaded entirely by Cassandra for each
query, whereas with clustering columns you can select a slice of
columns
On Thu, Jan 1, 2015 at 7:46 PM, Kevin Burton <bur...@spinn3r.com
<mailto:bur...@spinn3r.com>> wrote:
I think the two tables are the same. Correct?
create table foo (
source text,
target text,
primary key( source, target )
)
vs
create table foo (
source text,
target set<text>,
primary key( source )
)
… meaning that the first one, under the covers is represented
the same as the second. As a slice.
Am I correct?
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