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https://issues.apache.org/jira/browse/CASSANDRA-8238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14206691#comment-14206691
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Tyler Hobbs commented on CASSANDRA-8238:
----------------------------------------
[~krummas] is the plan to commit this patch and wait for more info? If so, I
would make the assertion message include something like "If you're seeing this
exception, please attach your logs to CASSANDRA-8238 to help us debug.".
> NPE in SizeTieredCompactionStrategy.filterColdSSTables
> ------------------------------------------------------
>
> Key: CASSANDRA-8238
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8238
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Tyler Hobbs
> Assignee: Marcus Eriksson
> Fix For: 2.1.3
>
> Attachments: 0001-assert-that-readMeter-is-not-null.patch
>
>
> {noformat}
> ERROR [CompactionExecutor:15] 2014-10-31 15:28:32,318
> CassandraDaemon.java:153 - Exception in thread
> Thread[CompactionExecutor:15,1,main]
> java.lang.NullPointerException: null
> at
> org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy.filterColdSSTables(SizeTieredCompactionStrategy.java:181)
> ~[apache-cassandra-2.1.1.jar:2.1.1]
> at
> org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy.getNextBackgroundSSTables(SizeTieredCompactionStrategy.java:83)
> ~[apache-cassandra-2.1.1.jar:2.1.1]
> at
> org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy.getNextBackgroundTask(SizeTieredCompactionStrategy.java:267)
> ~[apache-cassandra-2.1.1.jar:2.1.1]
> at
> org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionTask.run(CompactionManager.java:226)
> ~[apache-cassandra-2.1.1.jar:2.1.1]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> ~[na:1.7.0_72]
> at java.util.concurrent.FutureTask.run(FutureTask.java:262) ~[na:1.7.0_72]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> ~[na:1.7.0_72]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> [na:1.7.0_72]
> at java.lang.Thread.run(Thread.java:745) [na:1.7.0_72]
> {noformat}
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