How do I import a CSV file into Cassandra?

How do I import a CSV file into Cassandra?

Step A. Creating a CSV file

1. First, create an Excel File with fields you require to import with header/no header.
2. UUID creation (Optional, if you use UUID for id in your Cassandra DB) 2.1. Go to Link below for generating UUID v4 and download as a text file.

How do I import data into Cassandra table?

To insert simple data into the table cycling. cyclist_name, use the INSERT command. This example inserts a single record into the table. cqlsh> INSERT INTO cycling….

1. Starting cqlsh on Linux and Mac OS X.
2. How to create tables to store data.
3. Creating advanced data types in tables.
4. Creating functions.

What is batch in Cassandra?

In Cassandra BATCH is used to execute multiple modification statements (insert, update, delete) simultaneously. It is very useful when you have to update some column as well as delete some of the existing.

What is Sstableloader in Cassandra?

sstableloader (Cassandra bulk loader) Provides the ability to bulk load external data into a cluster, load existing SSTables into another cluster with a different number of nodes or replication strategy, and restore snapshots. sstablemetadata. The sstablemetadata utility prints metadata about a specified SSTable.

Can You bulk load from the same machine as Cassandra?

This allows you to bulk load from the same machine where cassandra is running, since it no longer listens at the same port with cassandra. Internally, streaming protocol is re-designed. You can stream data more efficiently than before. New CQLSSTableWriter is introduced ( CASSANDRA-5894 ).

When was the SSTable loader introduced in Cassandra?

We introduced sstableloader back in 0.8.1, in order to do bulk loading data into Cassandra. When it was first introduced, we wrote a blog post about its usage along with generating SSTable to bulk load. Now, Cassandra version 2.1.0 was released, and bulk loading has been evolved since the old blog post.

How to import a huge CSV file into Cassandra?

This tool is very flexible regarding the mapping of data in CSV/JSON into tables. In simplest case, when you have columns in CSV matching the columns in table you can just use:

How does the sstableloader Restore snapshots in Cassandra?

Restore snapshots. The sstableloader streams a set of SSTable data files to a live cluster. It does not simply copy the set of SSTables to every node, but transfers the relevant part of the data to each node, conforming to the replication strategy of the cluster.