[jira] [Created] (CASSANDRA-17254) nodetool toppartitions can fail because ByteBuffer.array() returns more bytes than would be considered valid by UTF8Serializer.validate

["Jordan West (Jira)" <ji...@apache.org>]

Jordan West created CASSANDRA-17254:
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             Summary: nodetool toppartitions can fail because ByteBuffer.array() returns more bytes than would be considered valid by UTF8Serializer.validate
                 Key: CASSANDRA-17254
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-17254
             Project: Cassandra
          Issue Type: Bug
            Reporter: Jordan West
            Assignee: Jordan West


The error below is caused by the use of [{{ByteBuffer.array()}}|https://github.com/apache/cassandra/blob/cassandra-3.0/src/java/org/apache/cassandra/db/ColumnFamilyStore.java#L1628]. Doing so not only makes the hex key potentially incorrect but causes invalid data to be passed to {{AbstractType.getString}} and ultimately {{UTF8Validator.validate}}. 

{code}
error: String didn't validate.
-- StackTrace --
org.apache.cassandra.serializers.MarshalException: String didn't validate.
	at org.apache.cassandra.serializers.UTF8Serializer.validate(UTF8Serializer.java:35)
	at org.apache.cassandra.db.marshal.AbstractType.getString(AbstractType.java:129)
	at org.apache.cassandra.db.ColumnFamilyStore.finishLocalSampling(ColumnFamilyStore.java:1633)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
{code}



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