Add config purge-backup-on-fullsync #245
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If replicas need full synchronization with maste, master need to create checkpoint for feeding replicas, and replicas also stage a checkpoint of the maste. If we also keep the backup, it maybe occupy extra disk space. You can enable 'purge-backup-on-fullsync' if disk is not sufficient, but that may cause remote backup copy failing. This config is no by default. Other changes - Simply how to check checkpoint exists or not - Adjust cron for purging backup and checkpoint
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If replicas need full synchronization with master, master need to create checkpoint for feeding replicas, and replicas also stage a checkpoint of the master. If we also keep the backup, it maybe occupy extra disk space. You can enable 'purge-backup-on-fullsync' if disk is not sufficient, but that may cause remote backup copy failing. This config is no by default. Other changes - Simply how to check checkpoint exists or not - Adjust cron for purging backup and checkpoint
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If replicas need full synchronization with master, master need to create
checkpoint for feeding replicas, and replicas also stage a checkpoint of
the master. If we also keep the backup, it maybe occupy extra disk space.
You can enable 'purge-backup-on-fullsync' if disk is not sufficient, but
that may cause remote backup copy failing. This config is no by default.
Other changes