Question : I generate graph data using Spark’s GraphX library and I need an efficient way to store graph data. […]
Tag: cassandra
Cassandra change replication factor hive datastore
Question : I am trying to change replication factor of HiveMetaStore but I receive this message: cassandra@cqlsh:system> alter KEYSPACE HiveMetaStore […]
Which database system can break me free?
Question : I am currently running a MySQL Database for logging and analyzing those logs. My current table schema looks […]
Cassandra query response time degradation
Question : I am experimenting with Cassandra on 4 sites with 2 nodes on each one. Have small network latency […]
Cassandra Table data modeling for a event system monitoring data
Question : I have been working in a cassandra database to keep the real time data of an event/monitoring system […]
How can I generate Cassandra data model from a MySQL schema?
Question : Is there a tool for generating a Cassandra model from a MySQL database? Answer : The whole point […]
Small startup: Cassandra + Hadoop or ElasticSearch
Question : To give some context, I am from a small start up (4 team members) and we work in […]
Optimal database for large number of columns or rows
Question : Problem 1: I have one file with 567 rows and 16,382 columns, most of which are floating point […]
Joining in NoSQL to get chat messages for a user
Question : In my chat app i have private / group chats and I need to get messages for a […]
Filtering a large number of rows in Cassandra
Question : Let’s assume we have a lot of potentially heavy rows (e.g. 500k) in a table that we want […]