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Periodically scans the data directories for block and block metadata files. |
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This represents block replicas which stored in DataNode. |
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This class is used by datanodes to maintain meta data of its replicas. |
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Exception indicating that DataNode does not have a replica that matches the target block. |
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DataNode is a class (and program) that stores a set of blocks for a DFS deployment. |
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FSDataset manages a set of data blocks. |
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This is an interface for the underlying storage that stores blocks for a data node. |
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