[GitHub] [incubator-dubbo] chickenlj commented on issue #2698: May used the dubbo version for instead of protocol version is correct

["chickenlj (GitHub)" <gi...@apache.org>]

The change was bringed in 2.6.4 or earlier, the version number was split into two parts:
1.`getVersion()`, which is the only version used in Dubbo before 2.6.4, it represents the version of the jar package or the version number stored in MANIFEST.MF. This version will change along with each release.
2. `getProtocolVersion()`, newly created to represent the RPC protocol version, it will only change when there's incompatible RPC protocol upgrades.

I would suggest that `getProtocolVersion()` only being used internally by Dubbo framework itself. 

[ Full content available at: https://github.com/apache/incubator-dubbo/issues/2698 ]
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