cassandra
Cassandra CQL unable to insert (no viable alternative at input)
After setup cassandra (0.8.4) and tested with insert and select via CLI, i move on to JDBC (1.0.3) with CQL.[详细]
2023-03-29 00:09 分类:问答Is Cassandra ready for prime time yet?
I started looking into Cassandra and I am really impressed with what it provides, but at the same time I read about how Reddit had a fire drill after migrating to Cassandra, and about twitter deciding[详细]
2023-03-28 06:37 分类:问答insert JSON String in Apache-Cassandra 0.8.2
Anybody know which is the easy way to insert a json string in cassandra. Suppose I have a json string like this: {\'key1\':\'val1\',\'key2开发者_开发百科\':\'val2\'}[详细]
2023-03-27 11:38 分类:问答Cassandra InvalidRequestException(why:[MyKeyspace][MyColumnFamily][6675...6c74] = [6c86......e65720] failed validation (String didn't validate.))
I am using Cassandra with Hadoop for input and output. During the output reduce job, I got an error: 2011-08-10 03:54:04,326 WARN org.apache.hadoop.mapred.Child: Error running child[详细]
2023-03-27 04:26 分类:问答Cassandra setInputSplitSize is not working properly
I am using Hadoop + Cassandra. I use setInputSplitSize(1000) to not overload mappers (and receive out of heap memory) as default it is 64K. All 开发者_StackOverflow社区together I have only 2M lines to[详细]
2023-03-27 01:05 分类:问答Apache cassandra - Designing DB for an application - How to select column families and super super column families?
I need to design DB for an application using cassandra. How to select column families and s开发者_运维技巧uper column families? I mean, in RDBMS we select tables right? How to select them in case of c[详细]
2023-03-26 13:55 分类:问答Problem with apache-cassandra 0.8.2
I want to integrate apache-Cassandra as my Database. I ha开发者_如何学运维ve downloaded 0.8.2 version of it. But it seems that there is having lots of changes made in this version. When I try to find[详细]
2023-03-25 18:48 分类:问答Cassandra CLI: RowKey with RandomPartitioner = Show Key in Cleartext?
using Cassandra CLI gives me the following output: RowKey: 31307c32333239 => (super_column=3f18d800-fed5-17cf-b91a-0016e6df0376,[详细]
2023-03-25 12:58 分类:问答why Mutation does not make inserts for existing columns
I am loading initial data (url list for a crawler) to Cassandra with status crawled=0. Then using Hadoop I crawl all the links and try to change crawled from 0 to something else, for example 1 or 2, o[详细]
2023-03-25 10:25 分类:问答Cassandra json2sstable Null Pointer Exception
I\'m using Cassandra 0.7.4. I have been breaking my head for most of today to make a simple import with json2sstable util. I\'m in Test Cluster.[详细]
2023-03-24 18:34 分类:问答