>I have 4 nodes, then I I create one keyspace (such as FOO) with replica >factor =1 and insert an data, > why I can see the directory of /var/lib/Cassandra/data/FOO in every nodes? As > I know, I just have one replica
So why do you have installed 4 nodes, not 1? They're for your data to be distributed between 4 nodes with 1 copy on one of them. This is like you have 100% of data and each node will have 25% of the data (random partitioning). Viktor. Best regards/ Pagarbiai Viktor Jevdokimov Senior Developer Email: viktor.jevdoki...@adform.com Phone: +370 5 212 3063 Fax: +370 5 261 0453 Konstitucijos pr. 23, LT-08105 Vilnius, Lithuania [cid:signature-logo6784.png]<http://www.adform.com/> Disclaimer: The information contained in this message and attachments is intended solely for the attention and use of the named addressee and may be confidential. If you are not the interested recipient, you are reminded that the information remains the property of the sender. You must not use, disclose, distribute, copy, print or rely on this e-mail. If you have received this message in error, please contact the sender immediately and irrevocably delete or destroy this message and any copies.
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