"No common protection layer between client and server" refers to the quality of protection configuration for SASL. This refers to the level of security that is applied to the messages sent over the RPC. These values are typically referred to by the names: "auth", "auth-int", and "auth-conf"
In HBase, these are controlled by the property "hbase.rpc.protection", with the values are "authentication", "integrity", and "privacy". Most likely, you have an incorrect version of hbase-site.xml on your client's classpath which sets a value for hbase.rpc.protection different than what your HBase servers are expecting. e.g. your client is using "authentication" but the servers are expecting "privacy".
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