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https://issues.apache.org/jira/browse/CASSANDRA-3691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13192461#comment-13192461
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Jackson Chung commented on CASSANDRA-3691:
------------------------------------------

my mistake. My trunk was still on svn, which is outdated. thx!
                
> LeveledCompactionStrategy is broken because of generation pre-allocation in 
> LeveledManifest.
> --------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-3691
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3691
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.1
>            Reporter: Pavel Yaskevich
>            Assignee: Sylvain Lebresne
>             Fix For: 1.1
>
>         Attachments: 3691.patch
>
>
> LeveledManifest constructor has the following code:
> {code}
> for (int i = 0; i < generations.length; i++)
> {
>     generations[i] = new ArrayList<SSTableReader>();
>     lastCompactedKeys[i] = new 
> DecoratedKey(cfs.partitioner.getMinimumToken(), null);
> }
> {code}
> But in the DecoratedKey constructor we have:
> {code}
> assert token != null && key != null && key.remaining() > 0;
> {code}
> so when you tried to create a CF with LeveledCompressionStrategy that will 
> result in 
> {noformat}
> java.lang.RuntimeException: java.util.concurrent.ExecutionException: 
> java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
>       at 
> org.apache.cassandra.thrift.CassandraServer.applyMigrationOnStage(CassandraServer.java:865)
>       at 
> org.apache.cassandra.thrift.CassandraServer.system_add_keyspace(CassandraServer.java:953)
>       at 
> org.apache.cassandra.thrift.Cassandra$Processor$system_add_keyspace.process(Cassandra.java:4103)
>       at 
> org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:3078)
>       at 
> org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:188)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>       at java.lang.Thread.run(Thread.java:680)
> Caused by: java.util.concurrent.ExecutionException: 
> java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
>       at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
>       at java.util.concurrent.FutureTask.get(FutureTask.java:83)
>       at 
> org.apache.cassandra.thrift.CassandraServer.applyMigrationOnStage(CassandraServer.java:857)
>       ... 7 more
> Caused by: java.lang.RuntimeException: 
> java.lang.reflect.InvocationTargetException
>       at 
> org.apache.cassandra.config.CFMetaData.createCompactionStrategyInstance(CFMetaData.java:770)
>       at 
> org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:209)
>       at 
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:300)
>       at 
> org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:281)
>       at org.apache.cassandra.db.Table.initCf(Table.java:339)
>       at org.apache.cassandra.db.Table.<init>(Table.java:288)
>       at org.apache.cassandra.db.Table.open(Table.java:117)
>       at 
> org.apache.cassandra.db.migration.AddKeyspace.applyModels(AddKeyspace.java:72)
>       at org.apache.cassandra.db.migration.Migration.apply(Migration.java:156)
>       at 
> org.apache.cassandra.thrift.CassandraServer$2.call(CassandraServer.java:850)
>       at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>       at java.util.concurrent.FutureTask.run(FutureTask.java:138)
>       ... 3 more
> Caused by: java.lang.reflect.InvocationTargetException
>       at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
>       at 
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>       at 
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>       at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>       at 
> org.apache.cassandra.config.CFMetaData.createCompactionStrategyInstance(CFMetaData.java:752)
>       ... 14 more
> Caused by: java.lang.AssertionError
>       at org.apache.cassandra.db.DecoratedKey.<init>(DecoratedKey.java:55)
>       at 
> org.apache.cassandra.db.compaction.LeveledManifest.<init>(LeveledManifest.java:79)
>       at 
> org.apache.cassandra.db.compaction.LeveledManifest.create(LeveledManifest.java:85)
>       at 
> org.apache.cassandra.db.compaction.LeveledCompactionStrategy.<init>(LeveledCompactionStrategy.java:74)
>       ... 19 more
> ERROR 19:52:44,029 Fatal exception in thread Thread[MigrationStage:1,5,main]
> {noformat}

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