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A simplified Apache Tika parser more geared towards an Enterprise Search crawl where all documents are parsed in a forked Java Virtual Machine. If memory issues occur during the parse, such as an Out Of Memory condition, the connector job will be unaffected.
ImportantThe Forked Apache Tika parser is only available on Fusion 4.2.4+. To use this parser, you will be required to Upgrade to Fusion 4.x to the latest version of Fusion.
When you have a Fusion-based search application running, at some point it might be necessary to upgrade to a later version of Fusion. We provide a migrator tool to simplify the upgrade process.
See the release history to find out what is new, including which versions of Solr, Spark, and ZooKeeper are bundled with each Fusion release.
The migrator transfers over most of the objects that make up your search application, all configurations and customizations for your application, and all data in collections in the application.
In some cases, manual steps are required for objects that the migrator cannot handle automatically. We give you instructions and guidance about what might be required. You should also review the log of the upgrade in /opt/fusion/x.y.z/var/upgrade/tmp/migrator.log (on Unix) or C:\lucidworks\var\fusion\x.y.z\upgrade\tmp\migrator.log (on Windows). The x.y.z directory is for the Fusion version that you are migrating from.

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Key points

Following are some key points about upgrading Fusion:
  • Migration involves down time. The upgrade process involves multiple starts and stops of Fusion services. Please plan accordingly, especially in terms of disabling external load balancers or monitors that might react adversely to the starts and stops.
  • Current deployment is preserved. Upgrades preserve the current Fusion deployment, copying information over from the current deployment to the new one. This provides a rapid roll-back option if you encounter problems during the upgrade process.
  • If the upgrade fails. If an upgrade fails, there is a procedure for dealing with that.

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Supported upgrade sequences

Only specific version-to-version upgrade sequences are supported. Some upgrades require multiple steps.
These upgrade sequences are supported.

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Upgrades to the current version

  • 3.1.x to 4.2.y. From any 3.1.x version to 4.2.6 SP1 (one step, using the migrator)
  • 4.0.x to 4.2.y. From any 4.0.x version to 4.2.6 SP1 (one step, using the migrator)
  • 4.1.x to 4.2.y. From any 4.1.x version to 4.2.6 SP1 (one step, using the migrator)
For links to these procedures, see Per-version instruction sets.

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Upgrades to prior versions

Using the migrator:
  • 3.1.x to 4.0.y. From 3.1.5 directly to 4.0.2 (one step) For more information, see Upgrade Fusion 3.1.x to 4.0.y.
  • 4.0.x to 4.0.y. From 4.0.0 or 4.0.1 to 4.0.2 (one step) For more information, see Upgrade Fusion Server 4.0.x to 4.0.y.
  • 3.1.x to 4.1.y. From any 3.1.x version to 4.1.3 (one step, using the migrator) For more information, see Upgrade Fusion Server 3.1.x to 4.1.y.
  • 4.0.x to 4.1.y. From 4.0.2 to 4.1.3 (one step, using the migrator) For more information, see Upgrade Fusion Server 4.0.x to 4.1.y.
  • 4.1.x to 4.1.y. From 4.1.0 to 4.1.3 (one step, using the migrator) For more information, see Upgrade Fusion Server 4.1.x to 4.1.y.

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Example

For example, to upgrade from Fusion 3.0.1 to Fusion Server 4.2.5, you would perform the following upgrades (both of them using the migrator):
  1. Upgrade from Fusion 3.0.1 to Fusion 3.1.5
  2. Upgrade from Fusion 3.1.5 to Fusion Server 4.2.5

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Per-version instruction sets

To upgrade to a later version of Fusion from an existing installation requires transferring over all configurations and data from your existing Fusion installation to the new version.How to upgrade from Fusion 3.1.x to Fusion Server 4.2.yPerform the steps in this article:Upgrade from Fusion Server 3.1.x to 4.2.y - Run a migrator to upgrade from Fusion Server 3.1.x to 4.2.y.How to upgrade from Fusion 4.0.x to Fusion Server 4.2.yPerform the steps in this article:Upgrade from Fusion Server 4.0.x to 4.2.y - Run a migrator to upgrade from Fusion Server 4.0.x to 4.2.y.How to upgrade from Fusion 4.1.x to Fusion Server 4.2.yPerform the steps in this article:Upgrade from Fusion Server 4.1.x to 4.2.y - Run a migrator to upgrade from Fusion Server 4.1.x to 4.2.y.How to upgrade from Fusion 4.2.x to Fusion Server 4.2.yPerform the steps in this article:Upgrade from Fusion Server 4.2.x to 4.2.y - Run a migrator to upgrade from Fusion Server 4.2.x to 4.2.y.
When entering configuration values in the UI, use unescaped characters, such as \t for the tab character. When entering configuration values in the API, use escaped characters, such as \\t for the tab character.
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