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The following page has been changed by udanax: http://wiki.apache.org/lucene-hadoop/Hbase/HbaseShell/ShellPlans ------------------------------------------------------------------------------ === Relational Algebra === - * https://issues.apache.org/jira/browse/HADOOP-1608 + * https://issues.apache.org/jira/browse/HADOOP-1608 (Vote up if you want it!!) ==== Projection ==== * selects a subset of the columnfamilies of a relation * Result = Ï ,,column_list,, (Relation) @@ -62, +62 @@ }}} ==== Group ==== - * http://issues.apache.org/jira/browse/HADOOP-1658 + * http://issues.apache.org/jira/browse/HADOOP-1658 (Vote up if you want it!!) * Aggregation functions on collections of data values: average, minimum, maximum, sum, count. * Group rows by value of an columnfamily and apply aggregate function independently to each group of rows. * <Grouping columnfamilies> Æ ,,function_list,, (Relation) @@ -71, +71 @@ }}} ==== θ Join ==== - * http://issues.apache.org/jira/browse/HADOOP-2021 + * http://issues.apache.org/jira/browse/HADOOP-2021 (Vote up if you want it!!) * The join of two relations R1(A,,1,, ,A,,2,, ,...,A,,n,,) and R2(B,,1,, ,B,,2,, ,...,B,,m,,) is a relation with degree k=n+m and attributes (A,,1,, ,A,,2,, ,...,A,,n,, , B,,1,, ,B,,2,, ,...,B,,m,,) that satisfy the join condition * Result = R1 â·â ,,θ join_condition,, R2 {{{ @@ -132, +132 @@ === Linear Algebra === * Proof of concept implementation for hbase-based Matrix Computing - * https://issues.apache.org/jira/browse/HADOOP-1655 + * https://issues.apache.org/jira/browse/HADOOP-1655 (Vote up if you want it!!) === Algebraic Geometry ===
