New answers tagged cassandra
It is not a strange question. I have the same problem every day; how to get things to run faster, faster. We use MS SQL Server 2012 with 512 GB RAM and a SAN at 50TB. We have about ten tables with more than a billion rows, our largest table is 75 billion rows. What really helps is ensuring that the right datatypes are used; no bigints when tinyints will do. ...
Did you take a look at sstableloader http://www.datastax.com/documentation/cassandra/2.0/cassandra/tools/toolsBulkloader_t.html ?
Let's say I add a column to a dynamic column set. I write this column to a single node. I then later add another column to the same column store, but this time to another node If you're talking about adding 2 different columns (with different names) to a single row/partition (column set?) then there will be no merge - those are different columns. If ...
To monitor - OpsCenter: http://www.datastax.com/what-we-offer/products-services/datastax-opscenter To query - DevCenter: http://www.datastax.com/what-we-offer/products-services/devcenter
The best way to think of a cassandra database is not as a set of databases on different nodes, but as one single database. Adding the column to the first node adds it to all other nodes. The actual number of times your data is written is determined by your replication strategy and replication factor, but each copy of the data will be the same. Thus, if you ...
Have you tried Helenos: https://github.com/tomekkup/helenos It seems good
You can index collection types in cassandra 2.1 and later. You are after: SELECT * FROM <table> WHERE <field> CONTAINS <value_in_list/map/set> Detailed example: cqlsh> USE ks; cqlsh:ks> CREATE TABLE data_points ( id text PRIMARY KEY, created_at timestamp, previous_event_id varchar, ...
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