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Introduce the WalProvider SPI and properties to configure the available set of WAL providers and the current provider. This commit converts the current DFS implementation to a DfsWalProvider and the upgrade code converts all existing wal entries in ZooKeeper and the root and metadata tables to use the 'dfs' provider id. Post-upgrade and on instance restart the `instance.wal.provider' property can be set to the class name of a WALProvider SPI implementation. The 'instance.wal.providers' property must contain the class name and configuration properties for the current and all in-use providers. An InMemoryWalProvider class in the test module provides an example implementation and is used in various ITs. Assisted-By: OpenAI GPT-6 Luna
dlmarion
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Oct 16, 2026
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Introduce the WalProvider SPI and properties to configure the available set of WAL providers and the current provider.
This commit converts the current DFS implementation to a DfsWalProvider and the upgrade code converts all existing wal entries in ZooKeeper and the root and metadata tables to use the 'dfs' provider id.
Post-upgrade and on instance restart the
`instance.wal.provider' property can be set to the class name of a WALProvider SPI implementation. The
'instance.wal.providers' property must contain the class name and configuration properties for the current and all in-use providers.
An InMemoryWalProvider class in the test module provides an example implementation and is used in various ITs.
Assisted-By: OpenAI GPT-6 Luna