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From "Stu Hood (JIRA)" <j...@apache.org>
Subject [jira] Reopened: (CASSANDRA-1468) allow setting CompactionManager.min|max compactionThreshold in configuration file
Date Mon, 20 Sep 2010 22:47:35 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-1468?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Stu Hood reopened CASSANDRA-1468:
---------------------------------


Equal min/max (the default) causes:
{quote}
ERROR 17:37:25,867 Fatal exception in thread Thread[CompactionExecutor:1,1,main]
java.util.concurrent.ExecutionException: java.lang.ArithmeticException: / by zero
	at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
	at java.util.concurrent.FutureTask.get(FutureTask.java:83)
	at org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor.afterExecute(DebuggableThreadPoolExecutor.java:87)
	at org.apache.cassandra.db.CompactionManager$CompactionExecutor.afterExecute(CompactionManager.java:584)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:888)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ArithmeticException: / by zero
	at org.apache.cassandra.db.CompactionManager.updateEstimateFor(CompactionManager.java:125)
	at org.apache.cassandra.db.CompactionManager.access$200(CompactionManager.java:53)
	at org.apache.cassandra.db.CompactionManager$7.run(CompactionManager.java:557)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	... 2 more
{quote}

> allow setting CompactionManager.min|max compactionThreshold in configuration file
> ---------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-1468
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1468
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.7.0
>            Reporter: Jonathan Ellis
>            Assignee: Jon Hermes
>             Fix For: 0.7 beta 2
>
>         Attachments: 1468.txt
>
>
> currently we can set these via JMX but there is no way to set them persistently.

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