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Type:
New Feature
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Status: Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: None
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Fix Version/s: 0.21.0
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Component/s: None
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Labels:None
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Hadoop Flags:Incompatible change, Reviewed
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Release Note:Introduced backup node which maintains the up-to-date state of the namespace by receiving edits from the namenode, and checkpoint node, which creates checkpoints of the name space. These facilities replace the secondary namenode.
Currently Secondary name-node acts as mere checkpointer.
Secondary name-node should be transformed into a standby name-node (SNN).
The long term goal is to make it a warm standby.
The purpose of this issue is to provide real time streaming of edits to SNN so that it contained the up-to-date namespace state.
- incorporates
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HADOOP-5511 Add Apache License to EditLogBackupOutputStream
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- Closed
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- is blocked by
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HADOOP-2337 Trash never closes FileSystem
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- Closed
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- is related to
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HDFS-1572 Checkpointer should trigger checkpoint with specified period.
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- Closed
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HDFS-1583 Improve backup-node sync performance by wrapping RPC parameters
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- Resolved
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- relates to
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HADOOP-5119 FSEditLog should not use FSNamesystem.getFSNamesystem()
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- Closed
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HADOOP-5559 BackupStorage should not use FSNamesystem.getFSNamesystem()
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- Closed
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HBASE-2098 [EC2] Build a HA cluster
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- Closed
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HDFS-192 TestBackupNode sometimes fails
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- Closed
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HDFS-311 Modifications to enable multiple types of logging
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- Resolved
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HADOOP-5502 Backup and checkpoint nodes should be documented
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- Closed
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