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Lou DeGenaro commented on UIMA-5122: ------------------------------------ revised: bash-4.1$ ./db_tool --help Usage: db_tool [options] Options: -h, --help show this help message and exit --save=PATH.tar.gz create snapshot of database and save to specified tar.gz file; requires database to be up --save-overwrite=PATH.tar.gz create snapshot of database and save to specified tar.gz file, overwriting previous file if one exists; requires database to be up --restore=PATH.tar.gz extract snapshot from specified tar.gz file and restore database; requires database to be down --restore-overwrite=PATH.tar.gz extract snapshot from specified tar.gz file and restore database, overwriting previous database if one exists; requires database to be down --quiet print no informational messages --verbose print extra debug messages > DUCC Database (db) admin tool for save & restore > ------------------------------------------------ > > Key: UIMA-5122 > URL: https://issues.apache.org/jira/browse/UIMA-5122 > Project: UIMA > Issue Type: Improvement > Components: DUCC > Reporter: Lou DeGenaro > Assignee: Lou DeGenaro > Fix For: 2.2.0-Ducc > > > DUCC employs the Cassandra database, which in turn provides the nodetool > command to create snapshots of the database. There is also a web site > https://docs.datastax.com/en/cassandra/2.1/cassandra/operations/ops_backup_noderestart_t.html > that comprises a labor intensive recipe for database restoration from > snapshots. > Provide a DUCC tool to aid in the creation of database snapshots and > restoration therefrom. -- This message was sent by Atlassian JIRA (v6.3.4#6332)