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https://issues.apache.org/jira/browse/CASSANDRA-1938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13005310#comment-13005310
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T Jake Luciani commented on CASSANDRA-1938:
-------------------------------------------

Ok cluster testing complete and all looks good!

I just noticed a SerializationTest started failing though, Can you take a look

{code}
    [junit] Testcase: 
testRowMutationRead(org.apache.cassandra.db.SerializationsTest):  FAILED
    [junit] null
    [junit] junit.framework.AssertionFailedError
    [junit]     at 
org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:233)
    [junit]     at 
org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:286)
    [junit]     at 
org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:191)
    [junit]     at 
org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:224)
    [junit]     at 
org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:506)
    [junit]     at 
org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:487)
    [junit]     at org.apache.cassandra.db.Table.initCf(Table.java:358)
    [junit]     at org.apache.cassandra.db.Table.<init>(Table.java:295)
    [junit]     at org.apache.cassandra.db.Table.open(Table.java:112)
    [junit]     at 
org.apache.cassandra.db.ColumnFamilySerializer.deserializeColumns(ColumnFamilySerializer.java:132)
    [junit]     at 
org.apache.cassandra.db.ColumnFamilySerializer.deserialize(ColumnFamilySerializer.java:125)
    [junit]     at 
org.apache.cassandra.db.RowMutation$RowMutationSerializer.deserialize(RowMutation.java:365)
    [junit]     at 
org.apache.cassandra.db.SerializationsTest.testRowMutationRead(SerializationsTest.java:219)

{code}

> Use UUID as node identifiers in counters instead of IP addresses 
> -----------------------------------------------------------------
>
>                 Key: CASSANDRA-1938
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1938
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>             Fix For: 0.8
>
>         Attachments: 0001-Use-uuid-instead-of-IP-for-counters.patch, 
> 0002-Merge-old-shard-locally.patch, 0003-Thrift-change-to-CfDef.patch, 
> 1938-rebase-and-fix-v1.txt, 1938_discussion
>
>   Original Estimate: 56h
>  Remaining Estimate: 56h
>
> The use of IP addresses as node identifiers in the partition of a given
> counter is fragile. Changes of the node's IP addresses can result in data
> loss. This patch proposes to use UUIDs instead.
> NOTE: this breaks the on-disk file format (for counters)

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