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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1039) Compaction fails if bloomfilters are enabled
Date Mon, 01 Dec 2008 19:13:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12652103#action_12652103
] 

stack commented on HBASE-1039:
------------------------------

bq. 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?

Do you have an issue id where this is discussed Bruce?

That you'd get the bloom filter exception on table that doesn't have it enabled -- or that
never had it enabled in the past is odd... difficult to explain.

> 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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