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Q. How does Tarantool check if there is more than one instance sharing wal_dir? (2016)

A. It reads a snapshot from memtx_dir. The snapshot contains the instance UUID. Tarantool then scans wal_dir and looks for .xlog files. Each .xlog file has a header, and the UUID of the .xlog file must match the UUID of the .snap file.


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snapshots_wal/wal_dir.txt · Last modified: 2018/05/25 20:38 by eabates

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