RowFilter

The elements of "filters" are chained together to process the input row: in row -> f(0) -> intermediate row -> f(1) -> ... -> f(N) -> out row The full chain is executed atomically.

The filter to apply to the input row if predicate_filter does not return any results. If not provided, no results will be returned in the false case.

If predicate_filter outputs any cells, then true_filter will be evaluated on the input row. Otherwise, false_filter will be evaluated.

The filter to apply to the input row if predicate_filter returns any results. If not provided, no results will be returned in the true case.

The elements of "filters" all process a copy of the input row, and the results are pooled, sorted, and combined into a single output row. If multiple cells are produced with the same column and timestamp, they will all appear in the output row in an unspecified mutual order. Consider the following example, with three filters: input row | ----------------------------------------------------- | | | f(0) f(1) f(2) | | | 1: foo,bar,10,x foo,bar,10,z far,bar,7,a 2: foo,blah,11,z far,blah,5,x far,blah,5,x | | | ----------------------------------------------------- | 1: foo,bar,10,z // could have switched with #2 2: foo,bar,10,x // could have switched with #1 3: foo,blah,11,z 4: far,bar,7,a 5: far,blah,5,x // identical to #6 6: far,blah,5,x // identical to #5 All interleaved filters are executed atomically.