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https://issues.apache.org/jira/browse/CASSANDRA-6647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis reassigned CASSANDRA-6647:
-----------------------------------------
Assignee: Dave Brosius
> Config param [compaction_throughput_mb_per_sec] unsafe calculation.
> -------------------------------------------------------------------
>
> Key: CASSANDRA-6647
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6647
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: RHEL 6.3 x64, jdk 1.7u51 64 bit (server
> mode),apache-cassandra 2.0.4
> Reporter: Platon Vai
> Assignee: Dave Brosius
> Priority: Minor
> Fix For: 2.0.4
>
>
> In cassandra.yaml i set
> compaction_throughput_mb_per_sec: 2048
> and got en exception
> ERROR 16:15:41,705 Exception in thread Thread[CompactionExecutor:3,1,main]
> java.lang.IllegalArgumentException: rate must be positive
> at
> com.google.common.base.Preconditions.checkArgument(Preconditions.java:93)
> at
> com.google.common.util.concurrent.RateLimiter.setRate(RateLimiter.java:355)
> at
> org.apache.cassandra.db.compaction.CompactionManager.getRateLimiter(CompactionManager.java:119)
> at
> org.apache.cassandra.db.compaction.AbstractCompactionStrategy.getScanners(AbstractCompactionStrategy.java:241)
> at
> org.apache.cassandra.db.compaction.AbstractCompactionStrategy.getScanners(AbstractCompactionStrategy.java:250)
> at
> org.apache.cassandra.db.compaction.CompactionTask.runWith(CompactionTask.java:126)
> at
> org.apache.cassandra.io.util.DiskAwareRunnable.runMayThrow(DiskAwareRunnable.java:48)
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
> at
> org.apache.cassandra.db.compaction.CompactionTask.executeInternal(CompactionTask.java:60)
> at
> org.apache.cassandra.db.compaction.AbstractCompactionTask.execute(AbstractCompactionTask.java:59)
> at
> org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionTask.run(CompactionManager.java:197)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:744)
> After trivial exploration i found this code
> CompactionManager.java:114
> double currentThroughput =
> DatabaseDescriptor.getCompactionThroughputMbPerSec() * 1024 * 1024;
> Main reason - result of multiplication out of range integer type
> I think simple fix
> double currentThroughput =
> DatabaseDescriptor.getCompactionThroughputMbPerSec() * 1024 * 1024L;
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