Regression: ColumnFamilyStoreTest, NativeCellTest, SSTableMetadataTest unit tests on 2.1

REGRESSION:  org.apache.cassandra.db.ColumnFamilyStoreTest.testSliceByNamesCommandOnUUIDTypeSCF

Error Message:
null

Stack Trace:
java.lang.NullPointerException
    at org.apache.cassandra.db.ColumnFamilyStoreTest.testSliceByNamesCommandOnUUIDTypeSCF(ColumnFamilyStoreTest.java:992)


REGRESSION:  org.apache.cassandra.db.NativeCellTest.testCells

Error Message:
null

Stack Trace:
java.lang.IllegalArgumentException
    at java.nio.Buffer.position(Buffer.java:236)
    at org.apache.cassandra.db.context.CounterContext.updateDigest(CounterContext.java:659)
    at org.apache.cassandra.db.NativeCounterCell.updateDigest(NativeCounterCell.java:139)
    at org.apache.cassandra.db.NativeCellTest.test(NativeCellTest.java:148)
    at org.apache.cassandra.db.NativeCellTest.testCells(NativeCellTest.java:132)


REGRESSION:  org.apache.cassandra.io.sstable.SSTableMetadataTest.testLegacyCounterShardTracking

Error Message:
null

Stack Trace:
junit.framework.AssertionFailedError: 
    at org.apache.cassandra.io.sstable.SSTableMetadataTest.testLegacyCounterShardTracking(SSTableMetadataTest.java:306)

commit 1ac72f637cdfc9876d2d121302061e46ac104bf8
Author: Jonathan Ellis <jbellis@apache.org>
Date:   Thu May 8 16:44:35 2014 -0500

    prefer MemoryUtil.getByteBuffer to JNA Native.getDirectByteBuffer; specify native endian on the former
    patch by bes; reviewed by jbellis for CASSANDRA-6575