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From "Edward Bruce Williams (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1039) Compaction fails if bloomfilters are enabled
Date Sun, 30 Nov 2008 21:12:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12651870#action_12651870
] 

Edward Bruce Williams commented on HBASE-1039:
----------------------------------------------

There seems to be some talk that HFS will incorporate bloom filter code. Anyone know the status
on this or how it will impact the need for hbase to implement this?

> Compaction fails if bloomfilters are enabled
> --------------------------------------------
>
>                 Key: HBASE-1039
>                 URL: https://issues.apache.org/jira/browse/HBASE-1039
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.18.1
>            Reporter: Andrew Purtell
>
> From Thibaut up on the list.
> As soon as hbase tries to compact the table, the following exception appears in the logfile:
(Other compactations also work fine without any errors)
> 2008-11-30 00:55:57,769 ERROR
> org.apache.hadoop.hbase.regionserver.CompactSplitThread: Compaction failed for region
mytable,,1228002541526
> java.lang.IllegalArgumentException: maxValue must be > 0
>     at org.onelab.filter.HashFunction.<init>(HashFunction.java:84)
>     at org.onelab.filter.Filter.<init>(Filter.java:97)
>     at org.onelab.filter.BloomFilter.<init>(BloomFilter.java:102)
>     at org.apache.hadoop.hbase.regionserver.HStoreFile$BloomFilterMapFile$Writer.<init>(HStoreFile.java:829)
>     at org.apache.hadoop.hbase.regionserver.HStoreFile.getWriter(HStoreFile.java:436)
>     at org.apache.hadoop.hbase.regionserver.HStore.compact(HStore.java:889)
>     at org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java:902)
>     at org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java:860)
>     at org.apache.hadoop.hbase.regionserver.CompactSplitThread.run(CompactSplitThread.java:83)
> Because the region cannot compact and/or split, it is soon dead after (re)assignment.

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