Any issues if we:
1) create an new empty table with the same structure as the old one
2) create hardlinks ("ln without -s"):
.../<newtable>-<newuuid>/<newkeyspacename>-<newtable>-* --->
.../<oldtable>-<olduuid>/<oldkeyspacename>-<oldtable>-*
3) run nodetool refresh -- newkeyspacename newtable
and then query/modify both tables independently/simultaneously?
In theory, as SSTables are immutable, this should work, but could there be some
hidden issues?
Regards,
Kyrill
________________________________
From: Dmitry Saprykin <[email protected]>
Sent: Sunday, April 8, 2018 7:33:03 PM
To: [email protected]
Subject: Re: copy from one table to another
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
<[email protected]<mailto:[email protected]>> 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 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
<[email protected]<mailto:[email protected]>> 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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