Vladimir Ozerov created IGNITE-6415:
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Summary: ALTER TABLE: investigate why descriptor is not updated
from GridQueryProcessor#onLocalOperationFinished
Key: IGNITE-6415
URL: https://issues.apache.org/jira/browse/IGNITE-6415
Project: Ignite
Issue Type: Task
Components: sql
Affects Versions: 2.3
Reporter: Vladimir Ozerov
Assignee: Alexander Paschenko
Fix For: 2.3
For {{CREATE INDEX}} and {{DROP INDEX}} our DDL engine works as follows:
1) Update H2 structures from DDL worker thread
2) Then update type descriptor from
{{GridQueryProcessor#onLocalOperationFinished}}
For some reason {{ALTER TABLE}} handled differently, and we first update
descriptor, then update H2. See
{{GridQueryProcessor#processSchemaOperationLocal}}.
Two questions:
1) Why descriptor is updated before H2? In this case we may endup in
inconsistent state if H2 failed for some reason
2) Why we decided not to follow {{CREATE/DROP INDEX}} approach?
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