CODEWITHSUNDEEP
cassandra
Adrian Rodriguez
Adrian Rodriguez

Reputation: 3242

Is there any way to migrate Cassandra 1.2 data to Cassandra 1.1?

I need to migrate some data in Cassandra 1.2.1 because we encountered a pretty bad bug. I want to move it to a 1.1.9 cluster that we know is pretty stable, but I can't get any of the export methods to work. I finally tried sstable2json and json2sstable, but now it looks like the json coming out of 1.2.x is different than the one coming out of 1.1.x

Upvotes: 3

Views: 244

Answers (2)

jbellis
jbellis

Reputation: 19377

The link Lyuben gives is useful, but for large data sets you'd want to use the sstable loader rather than COPY TO / COPY FROM. The latter is not parallelized and limited to the local disk space available.

Upvotes: 3

Lyuben Todorov
Lyuben Todorov

Reputation: 14153

You could export the required data as a SSTable (Data structure used by Cassandra to store it's data) and then re-import it into Cassandra 1.1. You can read about the process from the Datastax documentation. The documentation includes examples at the bottom of the page.

Upvotes: 1

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