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When a storage directory is in use by a cluster running in kip-500 mode, it will have a new version of the meta.properties file.  Since the current version is 0, the new version will be 1.  For now, the contents of the file will be the same in version 1 as version 0 Just as in version 0, meta.properties will continue to be a Java Properties file.  This essentially means that it is a plain text file where each line has the format key=value.

In version 0 of meta.properties, the cluster.id field is optional.  In contrast, in version 1 it is mandatory.

In version 0 of meta.properties, there is a broker.id field.  Version 1 does not have this field.  It is no longer needed because we no longer support dynamic broker id assignment.

Here is an example of a version 1 meta.properties file:

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