[GitHub] [cassandra] jonmeredith opened a new pull request #514: CASSANDRA-15688 Invalid cdc_raw_directory prevents server startup

[GitBox <gi...@apache.org>]

jonmeredith opened a new pull request #514: CASSANDRA-15688 Invalid cdc_raw_directory prevents server startup
URL: https://github.com/apache/cassandra/pull/514
 
 
   If cdc_raw_directory is set to an invalid directory it prevents startup of the server even when `cdc_enabled` is set false.
   
   The directory can either be set directly by the cdc_raw_directory setting in configuration YAML or indirectly via the `cassandra.storage_dir` system property, which is how I encountered it.
   
   Easy to reproduce by setting cdc_raw_directory to notadir/notasubdir
   Additionally while investigating, discovered that `DatabaseDescriptor.guessFileStore` can cause a `NullPointerException` if it runs out of parent elements
   before it can get a `FileStore`. It should provide a more useful `ConfigurationException` providing details on the problematic path. `guessFileStore` is used for checks on `commitlog_directory`, `cdc_raw_directory` and `data_file_directories`.

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