Check for DDL replication latency and Wait

[jd-zhang]

*Issue migrated from trac ticket # 319 www.kunlunbase.com *

component: computing nodes | priority: major

2021-12-17 18:13:12: [email protected] created the issue

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Check for DDL replication latency at beginning of any DDL stmt execution, and wait if there are events not yet replayed for current computing node, until all replayed, then execute the ddl.

Currently we simply return error and refuse to execute the ddl if there are DDLs not replayed yet.

[jd-zhang]

2022-06-06 11:40:33: [email protected] changed owner from david to smith

[jd-zhang]

2022-06-06 11:40:33: [email protected] changed status from new to assigned

[jd-zhang]

2022-06-16 11:09:07: smith changed status from assigned to accepted