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From Roshan <codeva...@gmail.com>
Subject Cassandra backup queston regarding commitlogs
Date Sat, 28 Apr 2012 13:04:06 GMT
Hi

Currently I am taking daily snapshot on my keyspace in production and
already enable the incremental backups as well.

According to the documentation, the incremental backup option will create an
hard-link to the backup folder when new sstable is flushed. Snapshot will
copy all the data/index/etc. files to a new folder.

*Question:*
What will happen (with enabling the incremental backup) when crash (due to
any reason) the Cassandra before flushing the data as a SSTable (inserted
data still in commitlog). In this case how can I backup/restore data?

Do I need to backup the commitlogs as well and and replay during the server
start to restore the data in commitlog files?

Thanks.



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