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https://issues.apache.org/jira/browse/CASSANDRA-4832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13478741#comment-13478741
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Tristan Seligmann commented on CASSANDRA-4832:
----------------------------------------------
After some further investigation, it looks like this began after I upgraded
from 1.1.2 to 1.1.6. The assertion seems to have been introduced as part of
some debugging in CASSANDRA-4687. I'm not familiar with the code at all, but it
seems to me that perhaps the assertion is bogus? If I have a secondary index on
a particular column, and that column has an empty value in some row, would this
not result in an empty key in the secondary index column family?
> 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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