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https://issues.apache.org/jira/browse/CASSANDRA-5900?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis updated CASSANDRA-5900:
--------------------------------------
Reviewer: yukim
Component/s: (was: Core)
Tools
Priority: Minor (was: Major)
Fix Version/s: 1.2.9
Assignee: Jonathan Ellis
> Setting bloom filter fp chance to 1.0 causes ClassCastExceptions
> ----------------------------------------------------------------
>
> Key: CASSANDRA-5900
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5900
> Project: Cassandra
> Issue Type: Bug
> Components: Tools
> Reporter: J.B. Langston
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 1.2.9
>
> Attachments: 5900.txt
>
>
> In 1.2, we introduced the ability to turn bloom filters off completely by
> setting fp chance to 1.0. It looks like there is a bug with this though.
> When it's set to 1.0 the following errors occur because AlwaysPresentFilter
> is not present in the switch statement here at
> https://github.com/apache/cassandra/blob/cassandra-1.2/src/java/org/apache/cassandra/utils/FilterFactory.java#L91,
> and we default to Murmur3BloomFilter for an unknown type.
> Exception in thread "main" java.lang.ClassCastException:
> org.apache.cassandra.utils.AlwaysPresentFilter cannot be cast to
> org.apache.cassandra.utils.Murmur3BloomFilter
> at
> org.apache.cassandra.utils.FilterFactory.serializedSize(FilterFactory.java:91)
> at
> org.apache.cassandra.io.sstable.SSTableReader.getBloomFilterSerializedSize(SSTableReader.java:531)
> at
> org.apache.cassandra.metrics.ColumnFamilyMetrics$15.value(ColumnFamilyMetrics.java:273)
> at
> org.apache.cassandra.metrics.ColumnFamilyMetrics$15.value(ColumnFamilyMetrics.java:268)
> at
> org.apache.cassandra.db.ColumnFamilyStore.getBloomFilterDiskSpaceUsed(ColumnFamilyStore.java:1825)
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