Palash Chauhan created PHOENIX-7888:
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Summary: Add IndexCDCConsumer liveness gauge, startup-failure
counter, and startup-wait histogram
Key: PHOENIX-7888
URL: https://issues.apache.org/jira/browse/PHOENIX-7888
Project: Phoenix
Issue Type: Sub-task
Reporter: Palash Chauhan
Assignee: Palash Chauhan
Fix For: 5.4.0, 5.3.2
h4. Background
{{IndexCDCConsumer}} is started by the {{IndexRegionObserver}} coprocessor when
an EC-indexed region opens. Its run loop has several early-exit paths (no EC
index found, CDC_STREAM never appeared, unexpected COMPLETE tracker status,
uncaught exception) where the thread exits silently — only emitting a log line,
with no metric signal that the consumer is dead.
h4. Problem
Three concrete gaps:
# *No direct liveness signal.*
# {*}Silent start-failure exits{*}.
# *Invisible startup latency.*
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