Lokesh Khurana created PHOENIX-7910:
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Summary: Defense-in-depth check for legacy Indexer coprocessor
Key: PHOENIX-7910
URL: https://issues.apache.org/jira/browse/PHOENIX-7910
Project: Phoenix
Issue Type: Sub-task
Reporter: Lokesh Khurana
Tables with the legacy {{Indexer}} coprocessor (instead of
{{{}IndexRegionObserver{}}}) silently lose all writes during a transform window
— IRO never runs, {{TransformMaintainer}} never attaches, dual-write to NEW
physical never happens. The transform appears to succeed but post-cutover NEW
is missing every write that landed during the transform.
Worst-case failure mode: silent data loss with no logs/errors.
*Decision:* Defense-in-depth check at {{TransformClient.checkIsTransformNeeded
}}and {{{}TransformTool.populateTransformToolAttributesAndValidate{}}}. Read
HBase
{{{}TableDescriptor{}}}, walk coprocessors, throw {{SQLException}} if legacy
{{Indexer }}present and {{IndexRegionObserver}} absent.
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