Details
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Type:
Sub-task
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Status: Resolved
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: Append Branch
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Fix Version/s: Append Branch
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Component/s: datanode
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Labels:None
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Hadoop Flags:Reviewed
Description
FSDatasetInterface#writeToBlock() currently allows to create/recover a temporary replica, create/recover a RBW replica, or append to a replica. The implementation of the method in FSDataset is very complicated and error prone. I'd like to break this method into 3:
1. writeToTemporary allows to create a Temporary replica or recover from a packet error for a Tempoary replica;
2. writeToRBW allows to create a RBW replica or recover from a packet error for a RBW replica;
3. append allows to append to an existing Finalized replica.