Hi Thomas , So IIUC in this case you should leave at least 50G for compaction (half of the sstables size). Is that makes sense? Cheers Avi
On Oct 1, 2017 11:39 AM, "Steinmaurer, Thomas" < thomas.steinmau...@dynatrace.com> wrote: Hi, half of free space does not make sense. Imagine your SSTables need 100G space and you have 20G free disk. Compaction won’t be able to do its job with 10G. Half free of total disk makes more sense and is what you need for a major compaction worst case. Thomas *From:* Peng Xiao [mailto:2535...@qq.com] *Sent:* Samstag, 30. September 2017 10:21 *To:* user <user@cassandra.apache.org> *Subject:* space left for compaction Dear All, As for STCS,datastax suggest us to keep half of the free space for compaction,this is not strict,could anyone advise how many space should we left for one node? Thanks, Peng Xiao The contents of this e-mail are intended for the named addressee only. It contains information that may be confidential. Unless you are the named addressee or an authorized designee, you may not copy or use it, or disclose it to anyone else. If you received it in error please notify us immediately and then destroy it. Dynatrace Austria GmbH (registration number FN 91482h) is a company registered in Linz whose registered office is at 4040 Linz, Austria, Freist <https://maps.google.com/?q=4040+Linz,+Austria,+Freist%C3%A4dterstra%C3%9Fe+313&entry=gmail&source=g> ädterstra <https://maps.google.com/?q=4040+Linz,+Austria,+Freist%C3%A4dterstra%C3%9Fe+313&entry=gmail&source=g> ße 313 <https://maps.google.com/?q=4040+Linz,+Austria,+Freist%C3%A4dterstra%C3%9Fe+313&entry=gmail&source=g>
