brickhouse.udf.bloom
Class BloomUDAF

java.lang.Object
  org.apache.hadoop.hive.ql.exec.UDAF
      brickhouse.udf.bloom.BloomUDAF

public class BloomUDAF
extends org.apache.hadoop.hive.ql.exec.UDAF

Construct a BloomFilter by aggregating on keys Uses hadoop util BloomFilter class Use with bloom_contains( key, bloomfile ); insert overwrite local directory bloomfile select bloom( ks_uid ) from big_table where premise = true; add file bloomfile; select ks_uid from other_big_table where bloom_contains( key, distributed_bloom('bloomfile') );

Author:

jeromebanks

Nested Class Summary

static class

BloomUDAF.BloomUDAFEvaluator

Constructor Summary

BloomUDAF()

Method Summary

Methods inherited from class org.apache.hadoop.hive.ql.exec.UDAF

getResolver, setResolver

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BloomUDAF

public BloomUDAF()