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From "Jonathan Gray" <jl...@streamy.com>
Subject RE: BloomFilter Failed when compaction
Date Tue, 10 Mar 2009 18:32:25 GMT
Bloom filters still have known issues in 0.19.0 and are not recommended.

They are being completely reworked for 0.20.0.

JG

> -----Original Message-----
> From: schubert zhang [mailto:zsongbo@gmail.com]
> Sent: Tuesday, March 10, 2009 8:58 AM
> To: hbase-user@hadoop.apache.org
> Subject: BloomFilter Failed when compaction
> 
> HBase 0.19.0. I know
> HBASE-1039<http://issues.apache.org/jira/browse/HBASE-1039>,
> but it still happen.
> 
> 2009-03-11 00:05:41,424 INFO
> org.apache.hadoop.hbase.regionserver.HRegion:
> starting  compaction on region
> TESTTABLE,13666093167@2009-02-1202:33:30.135,1236694689781
> 2009-03-11 00:05:41,466 WARN
> org.apache.hadoop.hbase.io.BloomFilterMapFile:
> Failed creating bloomfilter; proceeding without
> java.lang.IllegalArgumentException: maxValue must be > 0
>         at org.onelab.filter.HashFunction.<init>(HashFunction.java:88)
>         at org.onelab.filter.Filter.<init>(Filter.java:105)
>         at org.onelab.filter.BloomFilter.<init>(BloomFilter.java:105)
>         at
> org.apache.hadoop.hbase.io.BloomFilterMapFile$Writer.<init>(BloomFilter
> MapFile.java:184)
>         at
> org.apache.hadoop.hbase.regionserver.HStoreFile.getWriter(HStoreFile.ja
> va:466)
>         at
> org.apache.hadoop.hbase.regionserver.HStore.compact(HStore.java:923)
>         at
> org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java
> :725)
>         at
> org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java
> :682)
>         at
> org.apache.hadoop.hbase.regionserver.CompactSplitThread.run(CompactSpli
> tThread.java:105)
> 2009-03-11 00:05:42,240 INFO org.apache.hadoop.hbase.regionserver.HLog:
> Closed
> hdfs://nd0-rack0-
> cloud:9000/hbase/log_10.24.1.20_1236688137271_60020/hlog.dat.1236701116
> 602,
> entries=100023. New log writer:
> /hbase/log_10.24.1.20_1236688137271_60020/hlog.dat.1236701142239
> 
> 
> **


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