The sstablescrub utility
An offline version of nodetool scrub. This tool attempts to remove the corrupted parts while preserving non-corrupted data.
The sstablescrub utility is an offline version of nodetool scrub. It attempts
to remove the corrupted parts while preserving non-corrupted data.
Before using this tool, try rebuilding the tables using nodetool
scrub. If nodetool scrub does not fix the problem, use
this utility. Because it runs offline, sstablescrub can correct
errors that nodetool scrub cannot. After running this utility, you
must perform a repair because corrupted
rows are thrown away.
If scrubbing results in dropping rows, new SSTables become unrepaired. However, if no bad rows are detected, the SSTable keeps its original repairedAt field, which denotes the time of repair. If the entire table is unreadable, it will not be able to repair it.
Usage:
- Packaged installs: sstablescrub [options] <keyspace> <table>
- Tarball installs: <install_location>/bin/sstablescrub [options] <keyspace> <table>
| Flag | Option | Description |
|---|---|---|
| --debug | Display stack traces. | |
| -h | --help | Display help. |
| -m | --manifest-check | Only check and repair the leveled manifest, without actually scrubbing the SSTables. |
| -v | --verbose | Verbose output. |