HDDS-15072. [SCM] Implement dynamic load-based switching to reconstruction for EC decommission#10123
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HDDS-15072. [SCM] Implement dynamic load-based switching to reconstruction for EC decommission#10123jojochuang wants to merge 5 commits into
jojochuang wants to merge 5 commits into
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This PR has been marked as stale due to 21 days of inactivity. Please comment or remove the stale label to keep it open. Otherwise, it will be automatically closed in 7 days. |
Set hdds.scm.replication.reconstruction.global.limit default to 0 so cluster-wide EC reconstruction throttling is opt-in and default behavior matches pre-PR Ozone. Co-authored-by: Cursor <cursoragent@cursor.com> Change-Id: I6a0915cf8b181a1a98b08a4f3ede071e4d460e88
… reset. Move global reconstruction throttling from the under-replicated processor loop to sendThrottledReconstructionCommand so 1-1 replication continues when the cap is reached. Clear reconstruction counters on leader transition when pending ops are cleared. Co-authored-by: Cursor <cursoragent@cursor.com> Change-Id: I881fee0c3ea3c2e350b8fbb95321985569bef636
Skip reconstruction counter decrements when the command is no longer tracked after notifyStatusChanged clear, and floor decrements at zero. Co-authored-by: Cursor <cursoragent@cursor.com> Change-Id: I1530348aa2b09c232ad0410468d90cf098d8d0a3
…ction for EC decommission Change-Id: Ie4b8662b10de5d3e73312f6b18ac825853dfd72e
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The PR branch is quite a bit behind base branch (437 commits behind). Consider rebasing? |
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What changes were proposed in this pull request?
HDDS-15072. [SCM] Implement dynamic load-based switching to reconstruction for EC decommission
Please describe your PR in detail:
outofservice.limit.factor). Modify ECUnderReplicationHandler to dynamically switch from 1-1 replication to reconstruction when a source Datanode's load
exceeds the threshold. Implement "source offloading" logic to ensure that when reconstruction is triggered, the SCM prefers healthy replicas on other
nodes as sources, bypassing the bottlenecked node.
What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/HDDS-15072
How was this patch tested?