| = sstableverify |
| |
| Check sstable(s) for errors or corruption, for the provided table. |
| |
| ref: https://issues.apache.org/jira/browse/CASSANDRA-5791 |
| |
| Cassandra must be stopped before this tool is executed, or unexpected |
| results will occur. Note: the script does not verify that Cassandra is |
| stopped. |
| |
| == Usage |
| |
| sstableverify <options> <keyspace> <table> |
| |
| [cols=",",] |
| |=== |
| |--debug |display stack traces |
| |-e, --extended |extended verification |
| |-h, --help |display this help message |
| |-v, --verbose |verbose output |
| |=== |
| |
| == Basic Verification |
| |
| This is the basic verification. It is not a very quick process, and uses |
| memory. You might need to increase your memory settings if you have many |
| sstables. |
| |
| Example: |
| |
| .... |
| sstableverify keyspace eventlog |
| Verifying BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db') (7.353MiB) |
| Deserializing sstable metadata for BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db') |
| Checking computed hash of BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db') |
| Verifying BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db') (3.775MiB) |
| Deserializing sstable metadata for BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db') |
| Checking computed hash of BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db') |
| .... |
| |
| == Extended Verification |
| |
| During an extended verification, the individual values will be validated |
| for errors or corruption. This of course takes more time. |
| |
| Example: |
| |
| .... |
| root@DC1C1:/# sstableverify -e keyspace eventlog |
| WARN 14:08:06,255 Only 33.096GiB free across all data volumes. Consider adding more capacity to your cluster or removing obsolete snapshots |
| Verifying BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db') (7.353MiB) |
| Deserializing sstable metadata for BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db') |
| Checking computed hash of BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db') |
| Extended Verify requested, proceeding to inspect values |
| Verify of BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-32-big-Data.db') succeeded. All 33211 rows read successfully |
| Verifying BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db') (3.775MiB) |
| Deserializing sstable metadata for BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db') |
| Checking computed hash of BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db') |
| Extended Verify requested, proceeding to inspect values |
| Verify of BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-37-big-Data.db') succeeded. All 17068 rows read successfully |
| .... |
| |
| == Corrupted File |
| |
| Corrupted files are listed if they are detected by the script. |
| |
| Example: |
| |
| .... |
| sstableverify keyspace eventlog |
| Verifying BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-40-big-Data.db') (7.416MiB) |
| Deserializing sstable metadata for BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-40-big-Data.db') |
| Checking computed hash of BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-40-big-Data.db') |
| Error verifying BigTableReader(path='/var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-40-big-Data.db'): Corrupted: /var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-40-big-Data.db |
| .... |
| |
| A similar (but less verbose) tool will show the suggested actions: |
| |
| .... |
| nodetool verify keyspace eventlog |
| error: Invalid SSTable /var/lib/cassandra/data/keyspace/eventlog-6365332094dd11e88f324f9c503e4753/mc-40-big-Data.db, please force repair |
| .... |
