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https://issues.apache.org/jira/browse/CASSANDRA-1912?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis updated CASSANDRA-1912:
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Fix Version/s: 0.7.1
Assignee: Gary Dusbabek
> Cassandra should flush a keyspace after it was dropped
> ------------------------------------------------------
>
> Key: CASSANDRA-1912
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1912
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 0.7.0 rc 2
> Environment: any
> Reporter: Daniel Kraft
> Assignee: Gary Dusbabek
> Fix For: 0.7.1
>
>
> After dropping a keyspace one must not forget to flush it via
> nodetool -h host flush <dropped keyspace>
> If you forget to do this and restart cassandra, the following traceback
> happens and cassandra doesn't start up again:
> INFO 20:22:56,420 Heap size: 4117889024/4137549824
> INFO 20:22:56,424 JNA not found. Native methods will be disabled.
> INFO 20:22:56,432 Loading settings from
> file:/home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/conf/cassandra.yaml
> INFO 20:22:56,547 DiskAccessMode 'auto' determined to be mmap,
> indexAccessMode is mmap
> INFO 20:22:56,612 Creating new commitlog segment
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/commitlog/CommitLog-1293564176612.log
> INFO 20:22:56,666 reading saved cache
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/saved_caches/system-IndexInfo-KeyCache
> INFO 20:22:56,673 Opening
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/data/system/IndexInfo-e-1
> INFO 20:22:56,698 reading saved cache
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/saved_caches/system-Schema-KeyCache
> INFO 20:22:56,700 Opening
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/data/system/Schema-e-41
> INFO 20:22:56,703 Opening
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/data/system/Schema-e-43
> INFO 20:22:56,705 Opening
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/data/system/Schema-e-42
> INFO 20:22:56,727 reading saved cache
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/saved_caches/system-Migrations-KeyCache
> INFO 20:22:56,728 Opening
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/data/system/Migrations-e-41
> INFO 20:22:56,730 Opening
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/data/system/Migrations-e-42
> INFO 20:22:56,734 reading saved cache
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/saved_caches/system-LocationInfo-KeyCache
> INFO 20:22:56,735 Opening
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/data/system/LocationInfo-e-6
> INFO 20:22:56,739 Opening
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/data/system/LocationInfo-e-7
> INFO 20:22:56,741 Opening
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/data/system/LocationInfo-e-5
> INFO 20:22:56,746 reading saved cache
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/saved_caches/system-HintsColumnFamily-KeyCache
> INFO 20:22:56,776 Loading schema version 460e882a-1291-11e0-92ff-e700f669bcfc
> WARN 20:22:56,943 Schema definitions were defined both locally and in
> cassandra.yaml. Definitions in cassandra.yaml were ignored.
> INFO 20:22:56,954 reading saved cache
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/saved_caches/Keyspace1-Indexed1-KeyCache
> INFO 20:22:56,959 reading saved cache
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/saved_caches/Keyspace1-Super1-KeyCache
> INFO 20:22:56,960 reading saved cache
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/saved_caches/Keyspace1-Standard2-KeyCache
> INFO 20:22:56,961 reading saved cache
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/saved_caches/Keyspace1-Super2-KeyCache
> INFO 20:22:56,962 reading saved cache
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/saved_caches/Keyspace1-Standard1-KeyCache
> INFO 20:22:56,963 reading saved cache
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/saved_caches/Keyspace1-Super3-KeyCache
> INFO 20:22:56,964 reading saved cache
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/saved_caches/Keyspace1-StandardByUUID1-KeyCache
> INFO 20:22:56,971 Replaying
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/commitlog/CommitLog-1293524239077.log,
>
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/commitlog/CommitLog-1293563866498.log
> INFO 20:22:56,974 Finished reading
> /home/dk/develop/cassandra/apache-cassandra-0.7.0-rc3/STORAGE/commitlog/CommitLog-1293524239077.log
> ERROR 20:22:56,975 Exception encountered during startup.
> java.lang.NullPointerException
> at
> org.apache.cassandra.db.Table.createReplicationStrategy(Table.java:318)
> at org.apache.cassandra.db.Table.<init>(Table.java:258)
> at org.apache.cassandra.db.Table.open(Table.java:107)
> at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:302)
> at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:193)
> at
> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:142)
> at
> org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
> at
> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
> at
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
> Exception encountered during startup.
> java.lang.NullPointerException
> at
> org.apache.cassandra.db.Table.createReplicationStrategy(Table.java:318)
> at org.apache.cassandra.db.Table.<init>(Table.java:258)
> at org.apache.cassandra.db.Table.open(Table.java:107)
> at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:302)
> at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:193)
> at
> org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:142)
> at
> org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
> at
> org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
> at
> org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
> On IRC the only hint was to move the commitlog away, start cassandra, create
> the keyspace, stop cassandra, move the commitlog back and start it again.
> I'm not sure, how stable this would be in a loaded environment, so I propose
> that cassandra does the flush itself after dropping a keyspace.
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