The GlassFish Upgrade Tool: End of the Line

In the 2.X timeframe of GlassFish, there was an upgrade tool that would transform your existing configuration information and move you to a newer version of GlassFish. This tool did all the work of mapping one version's configuration information to another.

Starting with GlassFish v3, the application server became modular, and components became responsible for their own part of the configuration upgrade. See the upgrade one pager for more details on how configuration upgrades work.

With the real work of the upgrade happening in the application server itself, the job of the upgrade tool became smaller and smaller until it now does the following:

  1. Copies the source domain to the target app server.
  2. Runs asadmin start-domain --upgrade.

When the steps are that simple, there isn't much value in having the tool. If you read the Oracle GlassFish Server 3.1 Upgrade Guide, you'll see that there are several upgrade uses cases that do not involve the upgrade tool at all. One example is an in-place upgrade using the update center.

For this reason, and to avoid confusion between the upgrade tool and update center, we'll be removing the upgrade tool from versions of GlassFish after 3.1.X. Upgrades should still be a simple affair. After all, the tool is just doing a copy and starting the server. If it can, you can.

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Whatever part of GlassFish or the Java EE world that catches my attention. (Also, go Red Sox.)

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