Ayush Saxena created HDFS-15288:
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Summary: Add Available Space Rack Fault Tolerant BPP
Key: HDFS-15288
URL: https://issues.apache.org/jira/browse/HDFS-15288
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Ayush Saxena
Assignee: Ayush Saxena
The Present {{AvailableSpaceBlockPlacementPolicy}} extends the Default Block
Placement policy, which makes it apt for Replicated files. But not very
efficient for EC files, which by default use.
{{BlockPlacementPolicyRackFaultTolerant}}. So propose a to add new BPP having
similar optimization as ASBPP where as keeping the spread of Blocks to max
racks, i.e as RackFaultTolerantBPP.
This could extend {{BlockPlacementPolicyRackFaultTolerant}}, rather than the
{{BlockPlacementPOlicyDefault}} like ASBPP and keep other logics of
optimization same as ASBPP
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