Hello, I'm evaluating cassandra for use in my system. I could add approximately 16 million items using a single node. I'm using libcassandra (I can find my way through its code when I need to) to connect to it and I already have some infrastructure for handling and adding those items (I was using tokio cabinet before).
I couldn't find much documentation regarding how to make a cluster, but it seemed simple enough. At cassandra server A (10.0.0.2) I had seeds: "locahost". At server B (10.0.0.3) I configured seeds: "10.0.0.2" and auto_bootstrap: true. Then I created a keyspace and a few column families in it. I imediately began to add items and to get all these "Internal error processing get". I found it quite odd, I thought it had to do with the load I was putting in, seeing that a few small tests had worked before. I spent quite some time debugging, when I finally decided to write this e-mail. I wanted to double check stuff, so I ran nodetool to see if everything was right. To my surprise, there was only one of the node available. It took a little while for the other one to show up as Joining and then as Normal. After I waited that period, I was able to insert items to the cluster with no error at all. Is that expected behaviour? What is the recommended way to setup a cluster? Should it be done manually. Setting up the machines, creating all keyspaces and colum families then checking nodetool and waiting for it to get stable? On a side note, sometimes I get "Default TException" (that seems to happen when the machine is in a heavier load than usual), commonly retrying the read or insert right after works fine. Is that what's supposed to happen? Perhaps I should raise some timeout somewhere? This is what ./bin/nodetool -h localhost ring reports me: Address DC Rack Status State Load Owns Token 119105113551249187083945476614048008053 10.0.0.3 datacenter1 rack1 Up Normal 3.43 GB 65.90% 61078635599166706937511052402724559481 10.0.0.2 datacenter1 rack1 Up Normal 1.77 GB 34.10% 119105113551249187083945476614048008053 It's still adding stuff. I have no idea why B owns so many more keys than A. I'm sorry if what I'm asking is trivial. But I have been having a hard time finding documentation. I've found a lot of outdated stuff, which was frustrating. I hope you guys have the time to help me out or -- if not -- I hope you can give me good reading material. Thank you, Rafael
