sandynz commented on pull request #12267:
URL: https://github.com/apache/shardingsphere/pull/12267#issuecomment-914260198
Why we change it:
1, From openGauss testing response, execute `SELECT * FROM
pg_create_logical_replication_slot('slot'_name, 'test_decoding');` repeatedly
will cause exception, and error code is different as PostgreSQL, so exception
thrown will cause scaling task broken.
We'll check whether slot exists before create it, and drop slot when scaling
task finished.
2, Keep slot after task finished, it will cost system resources
unnecessaryly.
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