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Cassandra for Oracle DBA’s Part 10: Commit Logs (Managing Archivelogs & Redlogs)

Archive Logs & Redologs (commit logs)  Parameters that need to effect.

commitlog_directory: /root/.ccm/geek_cluster/node1/commitlogs

commitlog_directory: /root/.ccm/geek_cluster/node1/commitlogs

commitlog_segment_size_in_mb: 32

commitlog_sync: periodic

commitlog_sync_period_in_ms: 10000

/.ccm/geek_cluster/node1/resources/cassandra/conf/commitlog_archiving.properties file to keep archive_command

Argument 1 will give you the path to the files you'd want to copy, while 

Argument 2 will give uou the name if it. You can then create a command:

archive_command=/bin/bash /home/cassandra/scripts/cassandra-archive.sh %path %name

The above would be an example for me. As the commands by default only  execute 1 command, I have them point to a custom script that does what I  desire.

My script then looks something like this:

#! /bin/bash

# use bzip to compress the file

bzip2 --best -k $1

# move to commit log archive

mv $1.bz2 $HOME/commitlog_restore/$2.bz2

I compress my commitlog and then move it somewhere else. Cassandra will call this operation first, and then delete the commitlog. You can apply similar behaviours to all of those commands.

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