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https://issues.apache.org/jira/browse/HDFS-15288?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ayush Saxena updated HDFS-15288:
--------------------------------
Release Note:
Added a new BlockPlacementPolicy:
"AvailableSpaceRackFaultTolerantBlockPlacementPolicy" which uses the same
optimization logic as the AvailableSpaceBlockPlacementPolicy along with
spreading the replicas across maximum number of racks, similar to
BlockPlacementPolicyRackFaultTolerant.
The BPP can be configured by setting the blockplacement policy class as
org.apache.hadoop.hdfs.server.blockmanagement.AvailableSpaceRackFaultTolerantBlockPlacementPolicy
Issue Type: New Feature (was: Improvement)
> Add Available Space Rack Fault Tolerant BPP
> -------------------------------------------
>
> Key: HDFS-15288
> URL: https://issues.apache.org/jira/browse/HDFS-15288
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Ayush Saxena
> Assignee: Ayush Saxena
> Priority: Major
> Fix For: 3.4.0
>
> Attachments: HDFS-15288-01.patch, HDFS-15288-02.patch,
> HDFS-15288-03.patch, HDFS-15288-Addendum-01.patch
>
>
> 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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