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From: "Hiller, Dean" <Dean.Hiller@nrel.gov>
To: "user@cassandra.apache.org" <user@cassandra.apache.org>, Wei Zhu
	<wz1975@yahoo.com>
Date: Mon, 10 Dec 2012 14:13:29 -0700
Subject: Re: multiget_slice SlicePredicate
Thread-Topic: multiget_slice SlicePredicate
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What's wrong with multiget=85parallel performance is great from multiple di=
sks and so usually that is a good thing.

Also, something looks wrong, since you have list<binary> keys, I would expe=
ct the Map to be Map<binary, list<ColumnOrSuperColumn>>

Are you sure you have that correct?  IF you set range to 100, it should be =
100 columns each row but it never hurts to run the code and verify.

Later,
Dean
PlayOrm Developer


From: Wei Zhu <wz1975@yahoo.com<mailto:wz1975@yahoo.com>>
Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <us=
er@cassandra.apache.org<mailto:user@cassandra.apache.org>>, Wei Zhu <wz1975=
@yahoo.com<mailto:wz1975@yahoo.com>>
Date: Monday, December 10, 2012 2:07 PM
To: Cassandr usergroup <user@cassandra.apache.org<mailto:user@cassandra.apa=
che.org>>
Subject: multiget_slice SlicePredicate

I know it's probably not a good idea to use multiget, but for my use case, =
it's the only choice,

I have question regarding the SlicePredicate argument of the multiget_slice


The SlicePredicate takes slice_range which takes start, end and range. I su=
ppose start and end will apply to each individual row. How about range, is =
it a accumulative column count of all the rows or to the individual row?
If I set range to 100, is it 100 columns per row, or total?

Thanks for you reply,
-Wei

multiget_slice

 *
map<string,list<ColumnOrSuperColumn>> multiget_slice(list<binary> keys, Col=
umnParent column_parent, SlicePredicate predicate, ConsistencyLevel consist=
ency_level)