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With these changes in place, the replicated log containing all metadata changes (henceforth called metadata log) is the source of metadata related information for all nodes in the cluster. Any errors that occur while processing the log could lead to the in-memory state for the node becoming inconsistent. It is important that such errors are made visible. The metrics proposed in the following section aim at making errors in this processing visibledoing so. These metrics can be used to set up alerts so that affected nodes are visible can be discovered and needed remedial actions can be performed on them.

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