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From "Tristan Seligmann (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4832) AssertionError: keys must not be empty
Date Thu, 18 Oct 2012 05:32:02 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13478687#comment-13478687
] 

Tristan Seligmann commented on CASSANDRA-4832:
----------------------------------------------

Actually, it seems like this gets logged any time Cassandra tries to flush this column family
now.
                
> AssertionError: keys must not be empty
> --------------------------------------
>
>                 Key: CASSANDRA-4832
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4832
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.1.6
>         Environment: Debian 6.0.5
>            Reporter: Tristan Seligmann
>
> I'm getting errors like this logged:
>  INFO 07:08:32,104 Compacting [SSTableReader(path='/var/lib/cassandra/data/Fusion/quoteinfo/Fusion-quoteinfo.quoteinfo_search_value_idx-hf-114-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/Fusion/quoteinfo/Fusion-quoteinfo.quoteinfo_search_value_idx-hf-113-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/Fusion/quoteinfo/Fusion-quoteinfo.quoteinfo_search_value_idx-hf-110-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/Fusion/quoteinfo/Fusion-quoteinfo.quoteinfo_search_value_idx-hd-108-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/Fusion/quoteinfo/Fusion-quoteinfo.quoteinfo_search_value_idx-hd-106-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/Fusion/quoteinfo/Fusion-quoteinfo.quoteinfo_search_value_idx-hd-107-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/Fusion/quoteinfo/Fusion-quoteinfo.quoteinfo_search_value_idx-hf-112-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/Fusion/quoteinfo/Fusion-quoteinfo.quoteinfo_search_value_idx-hf-109-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/Fusion/quoteinfo/Fusion-quoteinfo.quoteinfo_search_value_idx-hf-111-Data.db')]
> ERROR 07:08:32,108 Exception in thread Thread[CompactionExecutor:5,1,main]
> java.lang.AssertionError: Keys must not be empty
>         at org.apache.cassandra.io.sstable.SSTableWriter.beforeAppend(SSTableWriter.java:133)
>         at org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:154)
>         at org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:159)
>         at org.apache.cassandra.db.compaction.CompactionManager$1.runMayThrow(CompactionManager.java:154)
>         at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
>         at java.util.concurrent.Executors$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)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>         at java.lang.Thread.run(Thread.java:662)
> I'm not really sure when this started happening; they tend to be logged during a repair
but I can't reproduce the error 100% reliably.

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