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From Adrian Cockcroft <acockcr...@netflix.com>
Subject Re: Reclaim deleted rows space
Date Sun, 02 Jan 2011 19:41:00 GMT
How many nodes do you have? You should be able to run a rolling compaction around the ring,
one node at a time to minimize impact. If one node is too big an impact, maybe you should
have a bigger cluster? If you are on EC2, try running more but smaller instances.

Adrian

From: shimi <shimi.k@gmail.com<mailto:shimi.k@gmail.com>>
Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Date: Sun, 2 Jan 2011 11:25:42 -0800
To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Subject: Reclaim deleted rows space

Lets assume I have:
* single 100GB SSTable file
* min compaction threshold is set to 2

If I delete rows which are located in this file. Is the only way to "clean" the deleted rows
is by inserting another 100GB of data or by triggering a painful major compaction?

Shimi

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