cassandra
Cassandra + Hector: How to navigate/jump backwards in the result?
I would be thankfull for advice, how to navigate backwards with get_slice (columns): If I have these colum names 1 2 3 4 5 6 7 8 9 10 11 12 and I have the start column/key 8 and want to query 4 colum[详细]
2023-03-24 06:20 分类:问答Read-your-own-writes consistency in Cassandra
Read-your-own-writes consistency is great improvement from the so called eventual consistency: if I change my profile picture I don\'t care if others see the change a minute later, but it looks weird[详细]
2023-03-23 20:52 分类:问答realtime querying/aggregating millions of records - hadoop? hbase? cassandra?
I have a solution that can be parallelized, but I don\'t (yet) have experience with hadoop/nosql, and I\'m not sure which solution is best for my needs.In theory, if I had unlimited CPUs, my results s[详细]
2023-03-23 14:58 分类:问答How do you use the Cassandra tool sstableloader?
I\'m trying to use the sstableloader to load data into an existing Cassandra ring, but cant figure out how to actually get it to work.I\'m trying to run it on a machine that has a running cassandra no[详细]
2023-03-23 14:08 分类:问答Set Super Column Family in Cassandra Cli
I\'m using Cassandra 0.8.0. I cannot figure out how to use the Cassandra-Cli to add values to a currently existing SuperColumn. For example: I have added the following to my keyspace[详细]
2023-03-23 06:29 分类:问答cassandra massive write perfomance problem
I have server with 4 GB RAM and 2x 4 cores CPU. When I start perform massive writes in Cass开发者_如何转开发andra all works fine initially, but after a couple hours with 10K inserts per second databas[详细]
2023-03-22 10:25 分类:问答Ordered Data with Cassandra RandomPartitioner
I have about a billion pieces of data that I would like to store i开发者_JAVA百科n Cassandra.The data items are ordered by time, and one of the main queries I\'ll be doing is to find the items between[详细]
2023-03-22 10:08 分类:问答SchemaDisagreementException
Trying to set up a cassandra cluster, but it tells me that I have a SchemaDisagre开发者_C百科ementException.What is weird is that writing sometimes works, just not all of the time.I assume that I must[详细]
2023-03-22 09:14 分类:问答getting error when executing Cassandra WordCount on Hadoop: java.lang.NoSuchMethodError: org.apache.thrift.meta_data.FieldValueMetaData.<init>(BZ)V
Trying to execute WordCount example from cassandra and getting an error: Exception in thread \"main\" java.lang.NoSuchMethodError: org.apache.thrift.meta_data.FieldValueMetaData.(BZ)V[详细]
2023-03-22 06:56 分类:问答cassandra, simple query
i am starting with cassandra, but i have some difficult to understand how the queries work. i have this[详细]
2023-03-21 03:58 分类:问答