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Date: Mon, 7 Dec 2009 17:25:18 +0000 (UTC)
From: "Jonathan Ellis (JIRA)" <jira@apache.org>
To: cassandra-commits@incubator.apache.org
Subject: [jira] Commented: (CASSANDRA-605) Corruption in CommitLog
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    [ https://issues.apache.org/jira/browse/CASSANDRA-605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12786996#action_12786996 ] 

Jonathan Ellis commented on CASSANDRA-605:
------------------------------------------

Chris indicated in IRC that this does look like it only occurs near the end of the commitlog, where fsync hasn't yet guaranteed that data is safe.

> Corruption in CommitLog
> -----------------------
>
>                 Key: CASSANDRA-605
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-605
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 0.5
>            Reporter: Chris Goffinet
>             Fix For: 0.5
>
>
> We are seeing corruption in commit log files when cassandra gets shutdown sometimes. I can attach the commitlogs privately. Here is a stacktrace:
>  INFO [main] 2009-12-05 14:59:25,946 RecoveryManager.java (line 64) Replaying /mnt/var/cassandra/commitlog/CommitLog-1259972135241.log, /mnt/var/cassandra/commitlog/CommitLog-1260050162791.log, /mnt/var/cassandra/commitlog/CommitLog-1260047770958.log, /mnt/var/cassandra/commitlog/CommitLog-1260052237605.log
> ERROR [COMPACTION-POOL:1] 2009-12-05 14:59:37,436 DebuggableThreadPoolExecutor.java (line 120) Error in executor futuretask
> java.util.concurrent.ExecutionException: java.lang.NumberFormatException: For input string: "nan"
>         at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
>         at java.util.concurrent.FutureTask.get(FutureTask.java:83)
>         at org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor.afterExecute(DebuggableThreadPoolExecutor.java:112)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:888)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>         at java.lang.Thread.run(Thread.java:619)
> Caused by: java.lang.NumberFormatException: For input string: "nan"
>         at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1224)
>         at java.lang.Float.valueOf(Float.java:388)
>         at java.lang.Float.<init>(Float.java:489)
>         at com.digg.cassandra.db.marshal.FloatStringType.compare(FloatStringType.java:72)
>         at com.digg.cassandra.db.marshal.FloatStringType.compare(FloatStringType.java:19)
>         at java.util.concurrent.ConcurrentSkipListMap$ComparableUsingComparator.compareTo(ConcurrentSkipListMap.java:606)
>         at java.util.concurrent.ConcurrentSkipListMap.doGet(ConcurrentSkipListMap.java:797)
>         at java.util.concurrent.ConcurrentSkipListMap.get(ConcurrentSkipListMap.java:1640)
>         at org.apache.cassandra.db.ColumnFamilyStore.removeDeletedStandard(ColumnFamilyStore.java:530)
>         at org.apache.cassandra.db.ColumnFamilyStore.removeDeleted(ColumnFamilyStore.java:515)
>         at org.apache.cassandra.io.CompactionIterator.getReduced(CompactionIterator.java:111)
>         at org.apache.cassandra.io.CompactionIterator.getReduced(CompactionIterator.java:38)
>         at org.apache.cassandra.utils.ReducingIterator.computeNext(ReducingIterator.java:73)
>         at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:135)
>         at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:130)
>         at org.apache.commons.collections.iterators.FilterIterator.setNextObject(FilterIterator.java:183)
>         at org.apache.commons.collections.iterators.FilterIterator.hasNext(FilterIterator.java:94)
>         at org.apache.cassandra.db.ColumnFamilyStore.doFileCompaction(ColumnFamilyStore.java:919)
>         at org.apache.cassandra.db.ColumnFamilyStore.doFileCompaction(ColumnFamilyStore.java:861)
>         at org.apache.cassandra.db.ColumnFamilyStore.doCompaction(ColumnFamilyStore.java:663)
>         at org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:180)
>         at org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:177)
>         at java.util.concurrent.FutureTask$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

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