Printing the contents of .snap and .xlog files
tt cat FILE .. [flags]
tt cat prints the contents of snapshot (.snap) and
WAL (.xlog) files to stdout. A single call of tt cat can
print the contents of multiple files.
--format |
Output format: yaml (default), json, or lua |
--from |
Show operations starting from the given LSN |
--to |
Show operations up to the given LSN. Default: 18446744073709551615 |
--replica |
Filter the output by replica ID. Can be passed more than once |
--space |
Filter the output by space ID. Can be passed more than once |
--show-system |
Show the contents of system spaces |
When calling tt cat with filters by LSN (--from and --to flags) and
replica ID (--replica), remember that LSNs differ across replicas.
Thus, if you pass more than one replica ID via --from or --to,
the result may not reflect the actual sequence of operations.
Output contents of
00000000000000000000.xlogWAL file in the YAML format:tt cat 00000000000000000000.xlog
Output operations on spaces with
space_id512 and 513 from the00000000000000000012.snapsnapshot file in the JSON format:tt cat 00000000000000000012.snap --space 512 --space 513 --format json
Output operations on all spaces, including system spaces, from the
00000000000000000000.xlogWAL file:tt cat 00000000000000000000.xlog --show-system
Output operations with LSNs between 100 and 500 on replica 1 from the
00000000000000000000.xlogWAL file:tt cat 00000000000000000000.xlog --from 100 --to 500 --replica 1