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Are there impacts of using 4.x clients with a 5.x server?

Alex Fitzpatrick (5583816) | asked May 20 '15, 1:32 p.m.
 When 4.x was adopted we were advised to update our Eclipse clients and build engines from 3.x versions wherever possible to avoid performance issues.

Are there similar issues with 5.0.2 servers and 4.x clients?

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Alex Fitzpatrick (5583816) | answered May 20 '15, 1:38 p.m.
edited May 20 '15, 1:52 p.m.
There will always be an extra overhead of using any client that is not exactly the same version as the client since the server needs to compare versions and provide appropriate serialization to the client, however a number of performance related defects have been identified and resolved between 4.0.5 and 5.0.2, in the 5.0.2 all of the major performance bottlenecks have been resolved.

Fixed in 5.0.2

Consequently, while supported, it is not recommended to use 4.x clients with either 5.0 or 5.0.1 if it can be avoided. Either update your server to 5.0.2 or update clients to match your server to avoid these issues.

Meanwhile, as I mentioned above, there will always be an overhead if the client and server are not exactly the same version, so for best results it's always advisable to have clients and servers on precisely the same version.

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Tiago Moura (8387) | answered May 20 '15, 1:38 p.m.
Between 4.x.x and 5.x.x versions you probably do not have problems, but with the upcoming version 6, you should have.

Check this:

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