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https://issues.apache.org/jira/browse/CASSANDRA-9071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14561918#comment-14561918
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Fabien Rousseau commented on CASSANDRA-9071:
--------------------------------------------
Hum, it's because the check for "Empty partition" is invalid...
With the current code, it's possible for the first inserted row/partition to be
empty (due to
https://github.com/apache/cassandra/blob/cassandra-2.1/src/java/org/apache/cassandra/io/sstable/SSTableSimpleUnsortedWriter.java#L177
)
That's why the check allows for the first row/partition to be empty
(https://github.com/apache/cassandra/blob/cassandra-2.1/src/java/org/apache/cassandra/io/sstable/SSTableSimpleUnsortedWriter.java#L233)
BUT the buffer is a TreeMap which reorders keys (thus the first inserted key is
not necessarily in the first position/the first returned by the iterator).
> CQLSSTableWriter gives java.lang.AssertionError: Empty partition
> ----------------------------------------------------------------
>
> Key: CASSANDRA-9071
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9071
> Project: Cassandra
> Issue Type: Bug
> Components: Tools
> Environment: java 7 / 8
> cassandra 2.1.3 snapshot build locally with last commit
> https://github.com/apache/cassandra/commit/6ee4b0989d9a3ae3e704918622024fa57fdf63e7
> macos Yosemite 10.10.2
> Reporter: Ajit Joglekar
> Assignee: Benedict
> Fix For: 2.1.x
>
> Attachments: EmailWriter.java, Screen Shot 2015-04-15 at 11.14.40
> PM.png, data.csv.gz
>
>
> I am always getting the following error:
> Exception in thread "main" java.lang.AssertionError: Empty partition
> at
> org.apache.cassandra.io.sstable.SSTableSimpleUnsortedWriter$DiskWriter.run(SSTableSimpleUnsortedWriter.java:228)
> It happens at a certain point that seems to be repeatable. Only issue is I am
> converting 400 million records into multiple SSTables and creating small test
> is a challenge
> Last comment from Benedict looks relevant here
> https://issues.apache.org/jira/browse/CASSANDRA-8619
> Is there a work around, quick fix, fix that I can try out locally?
> Thanks,
> -Ajit
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