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From: Apache Wiki <wikidiffs@apache.org>
To: Apache Wiki <wikidiffs@apache.org>
Date: Mon, 02 Aug 2010 10:50:35 -0000
Message-ID: <20100802105035.26297.73792@eosnew.apache.org>
Subject: 
 =?utf-8?q?=5BCassandra_Wiki=5D_Update_of_=22API=22_by_StaffanEricsson?=

Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Cassandra Wiki" for=
 change notification.

The "API" page has been changed by StaffanEricsson.
The comment on this change is: Add DCQUORUM to the consistency levels.
http://wiki.apache.org/cassandra/API?action=3Ddiff&rev1=3D62&rev2=3D63

--------------------------------------------------

  ||`ANY` ||(Requires 0.6) Ensure that the write has been written to at lea=
st 1 node, including hinted recipients. ||
  ||`ONE` ||Ensure that the write has been written to at least 1 node's com=
mit log and memory table before responding to the client. ||
  ||`QUORUM` ||Ensure that the write has been written to `<ReplicationFacto=
r> / 2 + 1` nodes before responding to the client. ||
+ ||`DCQUORUM` ||As above but takes into account the rack aware placement s=
trategy. See https://issues.apache.org/jira/browse/CASSANDRA-492 ||
  ||`ALL` ||Ensure that the write is written to all `<ReplicationFactor>` n=
odes before responding to the client.  Any unresponsive nodes will fail the=
 operation. ||
  =

  =

@@ -44, +45 @@

  ||`ANY` ||Not supported. You probably want ONE instead. ||
  ||`ONE` ||Will return the record returned by the first node to respond. A=
 consistency check is always done in a background thread to fix any consist=
ency issues when `ConsistencyLevel.ONE` is used. This means subsequent call=
s will have correct data even if the initial read gets an older value.  (Th=
is is called `read repair`.) ||
  ||`QUORUM` ||Will query all nodes and return the record with the most rec=
ent timestamp once it has at least a majority of replicas reported.  Again,=
 the remaining replicas will be checked in the background. ||
+ ||`DCQUORUM` ||When using rack aware placement strategy reads are keept w=
ithin a data center. See https://issues.apache.org/jira/browse/CASSANDRA-49=
2 ||
  ||`ALL` ||Will query all nodes and return the record with the most recent=
 timestamp once all nodes have replied.  Any unresponsive nodes will fail t=
he operation. ||
  =

  =

@@ -194, +196 @@

  =

  =

  =

- =

  =3D=3D=3D CFDef, KSDef =3D=3D=3D
  '''''Requires Cassandra 0.7'''''
  =

@@ -202, +203 @@

  =

  =3D=3D=3D=3D CFDef =3D=3D=3D=3D
  ||'''Attribute''' ||'''Type''' ||'''Default''' ||'''Required''' ||'''Desc=
ription''' ||
- ||`table`||`string`||None||Yes||Keyspace this CFDef belongs to||
+ ||`table` ||`string` ||None ||Yes ||Keyspace this CFDef belongs to ||
- ||`name`||`string`||None||Yes||Name of column family. Must be unique to t=
he keyspace||
+ ||`name` ||`string` ||None ||Yes ||Name of column family. Must be unique =
to the keyspace ||
- ||`column_type`||`string`||"Standard"||No||One of "Standard" or "Super"||
+ ||`column_type` ||`string` ||"Standard" ||No ||One of "Standard" or "Supe=
r" ||
- ||`comparator_type`||`string`||"BytesType"||No||Name of comparator used f=
or column sorting||
+ ||`comparator_type` ||`string` ||"BytesType" ||No ||Name of comparator us=
ed for column sorting ||
- ||`subcomparator_type`||`string`||None||No||Name of comparator used for s=
ubcolumns (when column_type=3D"Super" only)||
+ ||`subcomparator_type` ||`string` ||None ||No ||Name of comparator used f=
or subcolumns (when column_type=3D"Super" only) ||
- ||`comment`||`string`||None||No||Human-readable description of column fam=
ily||
+ ||`comment` ||`string` ||None ||No ||Human-readable description of column=
 family ||
- ||`row_cache_size`||`double`||0||No||number of rows to cache||
+ ||`row_cache_size` ||`double` ||0 ||No ||number of rows to cache ||
- ||`preload_row_cache`||`boolean`||0 (False)||No||Set to true to automatic=
ally load the row cache||
+ ||`preload_row_cache` ||`boolean` ||0 (False) ||No ||Set to true to autom=
atically load the row cache ||
- ||`key_cache_size`||`double`||200000||No||Number of keys to cache||
+ ||`key_cache_size` ||`double` ||200000 ||No ||Number of keys to cache ||
+ =

  =

  =3D=3D=3D=3D KSDef =3D=3D=3D=3D
  ||'''Attribute''' ||'''Type''' ||'''Default''' ||'''Required''' ||'''Desc=
ription''' ||
- ||`name`||`string`||None||Yes||Name of keyspace||
+ ||`name` ||`string` ||None ||Yes ||Name of keyspace ||
- ||`strategy_class`||`string`||None||Yes||Fully qualified class name of re=
plication strategy||
+ ||`strategy_class` ||`string` ||None ||Yes ||Fully qualified class name o=
f replication strategy ||
- ||`replication_factor`||`integer`||None||Yes||Number of data replicas||
+ ||`replication_factor` ||`integer` ||None ||Yes ||Number of data replicas=
 ||
- ||`cf_defs`||`list<CfDef>`||None||Yes||list of column family definitions.=
 Can be empty, but not null||
+ ||`cf_defs` ||`list<CfDef>` ||None ||Yes ||list of column family definiti=
ons. Can be empty, but not null ||
- =

- =

  =

  =

  =3D=3D Method calls =3D=3D