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HDDS-15075. Add metrics for EC decommission speedup#10132

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jojochuang wants to merge 6 commits intoapache:masterfrom
jojochuang:HDDS-15075
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HDDS-15075. Add metrics for EC decommission speedup#10132
jojochuang wants to merge 6 commits intoapache:masterfrom
jojochuang:HDDS-15075

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What changes were proposed in this pull request?

HDDS-15075. Add metrics for EC decommission speedup

Please describe your PR in detail:

  • Implement comprehensive observability for the new mechanisms:

SCM Metrics: ec_reconstruction_decommission_triggered_total and ec_reconstruction_global_limit_reached_total.
DataNode Metrics: volume_outbound_concurrency_wait_total and histograms for volume-level wait times.
CLI/Recon: Ensure the new state (reconstruction vs replication) is visible in the container decommission status.

What is the link to the Apache JIRA

https://issues.apache.org/jira/browse/HDDS-15075

How was this patch tested?

Change-Id: Ifa6911e468f073ac2cc848edc3da20dc377c983c
…ction for EC decommission

Change-Id: Ie4b8662b10de5d3e73312f6b18ac825853dfd72e
Change-Id: Ic4e49c06f798cd4a15a630e742e17debba9b7494
(cherry picked from commit aca4193)
…upervisor

Change-Id: I4891d006eaf10252bbce16450cc98351bc7bac5d
(cherry picked from commit 9f42e73)
…Supervisor

Change-Id: I4b23b6c4a7d1074f170e2854cab0bab8f7189bb0
Change-Id: I32dbee8bdd9efe9b3e69d859c794679843fdb01c
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