[jira] [Created] (CASSANDRA-5703) IndexSummary and empty keys

["Fabien Rousseau (JIRA)" <ji...@apache.org>]

Fabien Rousseau created CASSANDRA-5703:
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             Summary: IndexSummary and empty keys
                 Key: CASSANDRA-5703
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5703
             Project: Cassandra
          Issue Type: Bug
    Affects Versions: 1.2.6
            Reporter: Fabien Rousseau


We just migrated one of our dev cluster to 1.2.6 and got this Exception for an SSTable after restarting nodes :

2013-06-26 11:18:46,316 [SSTableBatchOpen:1] ERROR CassandraDaemon - Exception in thread Thread[SSTableBatchOpen:1,5,main]
java.lang.AssertionError
        at org.apache.cassandra.utils.ByteBufferUtil.readBytes(ByteBufferUtil.java:401)
        at org.apache.cassandra.io.sstable.IndexSummary$IndexSummarySerializer.deserialize(IndexSummary.java:124)


The assertion :
https://github.com/apache/cassandra/blob/9851b73fc3bbaf61ec80b54c64483bcf56aaa396/src/java/org/apache/cassandra/utils/ByteBufferUtil.java#L401

should probably be "assert length >= 0;"

In a broader context, ByteBufferUtil.readBytes(...) could still be used to read 0 bytes without throwing an assertion

Note : This happens because the SSTable contains an empty rowkey. We're using StorageProxy directly, thus skipping validation, but it appears that other people hit this problem too : http://www.mail-archive.com/user@cassandra.apache.org/msg30123.html

Also note that data contained in this SSTable is not available because the assertion error is not catched.

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