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v1.1

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Standby Node in the Need Repair (WAL) State

Symptom

The Need Repair (WAL) fault occurs on a standby node of the MogDB.

Cause Analysis

The primary and standby DB instances are disconnected due to network faults or insufficient disk space. As a result, logs are not synchronized between the primary and standby DB instances, and the database cluster fails to start.

Procedure

Run the gs_ctl build -D command to rebuild the faulty node. For details, see the build parameter in the MogDB Tool Reference.

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