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https://issues.apache.org/jira/browse/CASSANDRA-19126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17798565#comment-17798565
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Branimir Lambov commented on CASSANDRA-19126:
---------------------------------------------
{quote}
{code}
private static final String MIXED_MODE_ERROR = "Some nodes involved in
repair are on an incompatible major version. " +
"Repair is not supported in
mixed major version clusters.";
{code}
{quote}
_To me_ this message in the context of a 5.0 cluster where something is in the
wrong compatibility mode would be quite confusing. At the very least we need to
state very clearly that a 5.x node in compatibility mode is considered a 4.x
node for all intents and purposes, including being a "same major version" for
the message above. Also, does this not mean we can't ever drop 4.0 support
because e.g. 6.0 must be compatible with 5.0, including in its compatibility
mode?
> Streaming appears to be incompatible with different
> storage_compatibility_mode settings
> ---------------------------------------------------------------------------------------
>
> Key: CASSANDRA-19126
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19126
> Project: Cassandra
> Issue Type: Bug
> Components: Consistency/Streaming, Legacy/Streaming and Messaging,
> Messaging/Internode, Tool/bulk load
> Reporter: Branimir Lambov
> Assignee: Jacek Lewandowski
> Priority: Normal
> Fix For: 5.0-rc, 5.x
>
>
> In particular, SSTableLoader appears to be incompatible with
> storage_compatibility_mode: NONE, which manifests as a failure of
> {{org.apache.cassandra.distributed.test.SSTableLoaderEncryptionOptionsTest}}
> when the flag is turned on (found during CASSANDRA-18753 testing). Setting
> {{storage_compatibility_mode: NONE}} in the tool configuration yaml does not
> help (according to the docs, this setting is not picked up).
> This is likely a bigger problem as the acceptable streaming version for C* 5
> is 12 only in legacy mode and 13 only in none, i.e. two C* 5 nodes do not
> appear to be able to stream with each other if their setting for the
> compatibility mode is different.
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