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nipra/row_count_with_prefix.clj

Created October 31, 2012 17:39
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Count rows starting with prefix
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row_count_with_prefix.clj
(let [f1 (PrefixFilter. (hb/to-bytes "0 "))]
(hb/with-table [table (hb/table "foo_bar_table")]
(hb/with-scanner [scanner (hb/scan table
:filter f1
:caching 1000)]
(loop [n 0]
(if (seq (.next scanner 1000))
(recur (+ n (count (.next scanner 1000))))
n)))))
@nipra

nipra commented Oct 31, 2012

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Find the bug because of which this code is returning about half of the actual number of rows starting with prefix ``0 ''. :-)

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