If you need this kind of logic, you might want to consider using Spark.
It's often used for data migration.
You could load your list of partition_key in a Spark RDD, then
use joinWithCassandraTable, and write the result back to your destination
table.
Just before the join, you could use repartition
Thank you all
I need something like this:
insert into table test2 select * from test1 where partition_key='SOME_KEYS';
The problem with copying sstable is that original table contains some billions
of records and i only want some hundred millions of records from the table, so
after copy/pastin
IMHO The best step by step description of what you need to do is here
https://issues.apache.org/jira/browse/CASSANDRA-1585?focusedCommentId=13488959&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-13488959
The only difference is that you need to copy data from one
You can use the same procedure to restore a table from snapshot from
datastax webpage
https://docs.datastax.com/en/cassandra/2.1/cassandra/operations/ops_backup_snapshot_restore_t.html
Just two modifications.
after step 5, modify the name of the sstables to add the name of the table
you want to
You can copy hardlinks to ALL SSTables from old to new table and then
delete part of data you do not need in a new one.
On Sun, Apr 8, 2018 at 10:20 AM, Nitan Kainth wrote:
> If it for testing and you don’t need any specific data, just copy a set of
> sstables with all files of that sequence and
If it for testing and you don’t need any specific data, just copy a set of
sstables with all files of that sequence and move to target tables directory
and rename it.
Restart target node or run nodetool refresh
Sent from my iPhone
> On Apr 8, 2018, at 4:15 AM, onmstester onmstester wrote:
>
Is there any way to copy some part of a table to another table in cassandra? A
large amount of data should be copied so i don't want to fetch data to client
and stream it back to cassandra using cql.
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